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Over 500,000 people visited Farnam Street last month to expand their knowledge and improve their thinking. Work smarter, not harder with our free weekly newsletter that's full of time-tested knowledge you can add to your mental toolbox.
“I am a person who listens for a living. I listen for wisdom, and beauty, and for voices not shouting to be heard.”
Krista Tippett, the host of the compelling podcast On Being, is an incredible conversationalist. From poets and physicists to neuroscientists — her show offers conversations that traverse time and disciplines. At the heart of her inquiry lies space to explore what it means to live a meaningful life.
In Becoming Wise: An Inquiry into the Mystery and Art of Living, Tippett, who listens for a living, offers an illuminating slice of these conversations. As a illuminating guide, her reflections walk us through the work of a lifetime exploring love, compassion, and forgiveness.
The book is organized around virtue and “gentle shifts of mind and habit.” She explores five raw materials for living a meaningful life:
Words — The language we use to tell stories to ourselves and others;
Body — “The body is where every virtue lives or dies”;
Love — More than something we fall into or out of, love is “the only aspiration big enough for the immensity of the human community.”;
Faith — “Literal reality is not all there is.”;
Hope — Hope has nothing to do with optimism or wishing, rather it reflects reality and reveres truth. Hope is a habit.
Tippet resurfaces questions many have explored before us. “What does it mean to be human? What matters in life? What matters in death? How to be of service to each other and the world?”
Each person explores these questions at one point or another in the context of our age and ourselves. The questions are not independent. Who we are to each other is a reflection of what it means to be human.
Wisdom leavens intelligence, and ennobles consciousness, and advances evolution itself.
Life is where we explore the mystery of ourselves and others. Here Tippett offers a voice to “those raw, essential, heartbreaking and life-giving places in us, so that we may know them more consciously, live what they teach us, and mine their wisdom for our life together.”
In the introduction Tippett refuses the false duality and headlines that drive so much of our divide.
[M]any features of national public life are also better suited to adolescence than to adulthood. We don’t do things adults learn to do, like calm ourselves, and become less narcissistic. Much of politics and media sends us in the opposite, infantilizing direction. We reduce great questions of meaning and morality to “issues” and simplify them to two sides, allowing pundits and partisans to frame them in irreconcilable extremes. But most of us don’t see the world this way, and it’s not the way the world actually works. I’m not sure there’s such a thing as the cultural “center,” or that it’s very interesting if it exists. But left of center and right of center, in the expansive middle and heart of our life together, most of us have some questions left alongside our answers, some curiosity alongside our convictions.
Imagination and nuance and the spaces between headlines is where we live. The book is an exploration of these spaces.
I have yet to meet a wise person who doesn’t know how to find some joy even in the midst of what is hard, and to smile and laugh easily, including at oneself. A sense of humor is high on my list of virtues, in interplay with humility and compassion and a capacity to change when that is the right thing to do. It’s one of those virtues that softens us for all the others.
She also offers a sobering reminder of our capacity to control.
We are never really running the show, never really in control, and nothing will go quite as we imagined it. Our highest ambitions will be off, but so will our worst prognostications.
No section of the book is more compelling than exploring words — “I take it as an elemental truth of life,” she writes, “that words matter.”
This is so plain that we can ignore it a thousand times a day. The words we use shape how we understand ourselves, how we interpret the world, how we treat others. From Genesis to the aboriginal songlines of Australia, human beings have forever perceived that naming brings the essence of things into being. The ancient rabbis understood books, texts, the very letters of certain words as living, breathing entities. Words make worlds.
On our affinity for tolerance she challenges us:
We chose too small a word in the decade of my birth— tolerance— to make the world we want to live in now. We opened to the racial difference that had been there all along, separate but equal, and to a new infusion of religions, ethnicities, and values. But tolerance doesn’t welcome. It allows, endures, indulges. In the medical lexicon, it is about the limits of thriving in an unfavorable environment. Tolerance was a baby step to make pluralism possible, and pluralism, like every ism, holds an illusion of control. It doesn’t ask us to care for the stranger. It doesn’t even invite us to know each other, to be curious, to be open to be moved or surprised by each other.
Words are containers.
The connection between words and meanings resembles the symbiosis between religion and spirituality. Words are crafted by human beings, wielded by human beings. They take on all of our flaws and frailties. They diminish or embolden the truths they arose to carry. We drop and break them sometimes. We renew them, again and again.
In one illuminating conversation, Tippett talks with one of her favorite thinkers about the failure of “official language and discourse” the poet Elizabeth Alexander, who read at the first Obama inauguration.
Here’s what we crave. We crave truth tellers. We crave real truth. There is so much baloney all the time. You know, the performance of political speech, of speeches you see on the news, doesn’t it often feel to you like there should be a thought bubble over it that says, “what I really would say if I could say it is . . .”
And how we are drawn to words that shimmer.
I learn so much every day from being a mother. My sons are 11 and 12, and you see the way children know when they’re being bamboozled. And they also are drawn towards language that shimmers, individual words with power. They will stop you and ask you to repeat a shimmering word if they’re hearing it for the first time. You can see it in their faces.
Words are the backbones to stories — the ones we tell others and the ones we tell ourselves.
The art of conversation I’m describing here is related, but it is something subtly and directionally different— sharing our stories in the service of probing together who we are and who we want to be. To me, every great story opens into an equally galvanizing exchange we can have together: So what? How does this change the way you see and live? How might it inform the way I see and live? I believe we can push ourselves further, and use words more powerfully and tell and make the story of our time anew.
“The world,” says physician Rachel Naomi Remen in an interview with Tippett, “is made up stories; it is not made of up facts.”
And yet we tell ourselves facts to piece together stories. Stories are how we make sense of life. Remen continues:
Well, the facts are the bones of the story, if you want to think of it that way. I mean, the facts are, for example, that I have had Crohn’s disease for 52 years. I’ve had eight major surgeries. But that doesn’t tell you about my journey and what’s happened to me because of that, and what it means to live with an illness like this and discover the power of being a human being. And whenever there’s a crisis, like 9/ 11, do you notice how the whole of the United States turned towards the stories? Where I was, what happened, what happened in those buildings, what happened to the people who were connected to the people in those buildings. Because that is the only way we can make sense out of life, through the stories. The facts are a certain number of people died there. The stories are about the greatness of being a human being and the vulnerability of being a human being.
There’s a powerful saying that sometimes we need a story more than food in order to live. They tell us about who we are, what is possible for us, what we might call upon. They also remind us we’re not alone with whatever faces us.
Becoming Wise is for those of us who want to explore the great questions of life with imagination and courage, realizing that much of life is lived in nuance that changes with who we are and, importantly, where we are standing.
The heated debate about Sapiens' “natural way of life” is missing the point.
Ever since the Cognitive Revolution, there hasn't been a natural way of life for Sapiens.
— Yuval Noah Harari
We modern humans have a fascination with trying to figure out our “natural” state. What do we eat — “naturally”? What sort of world are we “meant” to live in? What sort of family dynamic are we “meant” to have? Are we supposed to have sex with only the opposite gender, or is it perfectly “natural” to prefer your own? How much violence is natural and acceptable?
(The line of reasoning is a bit strange once we dig into it. Are modern humans not part of the natural world? Isn’t anything we do basically “natural”? At what point did we divert from “natural” to “unnatural”? We digress…)
One of the central conceits of the “man’s natural state” argument is that if we go back to some point in time, we’ll find it. We’ll finally come across the state of being where man lived totally in harmony with each other and with nature; eating the perfect diet for health, worshipping the correct gods, having sex in the natural and acceptable way. And besides studying religious texts, the tool that’s most frequently employed is the study of ancient, “pre-historic” man and woman. We hope that, by going back far enough, we’ll hit some arbitrary Point of Naturalness. That’s partially the approach used, for example, by the Paleo movement which has become such a popular force in nutrition. We evolved to eat bacon, right?
These types of “meant to be” questions presuppose that we existed in some homogenous state in the past, and that we should be striving to get back to that place; that nature has given us a sort of natural endowment that we are best to stick to. Not so, says Yuval Harari.
The value of a book like Harari’s Sapiens, with its broad sweep of human history, is that we learn that ever since our Cognitive Revolution, the point that what we call history diverges from what we call biology, human society has been consistently molded and remolded; changed to suit the temper of the moment. That’s what makes humanity so unique relative to other intelligent creatures. Culturally, we change rapidly and unpredictably. There are very few absolutes, there are very few arrangements we haven’t tried yet. What’s “natural” depends on which society you’re looking at and at which point in time you’re looking at it.
It stands to reason that the ethnic and cultural variety among ancient hunter-gatherers was equally impressive [as those found in Australia by European settlers], and that the 5 million to 8 million foragers who populated the world on the eve of the Agricultural Revolution were divided into thousands of separate tribes with thousands of different languages and cultures. This, after all, was one of the main legacies of the Cognitive Revolution. Thanks to the appearance of fiction, even people with the same genetic make-up who lived under similar ecological conditions were able to create very different imagined realities, which manifest themselves in different norms and values.
For example, there’s every reason to believe that a forager band that lived 30,000 years ago on the spot where Oxford University stands would have spoken a different language from one living where Cambridge is now situated. One band might have been belligerent and the other peaceful. Perhaps the Cambridge band was communal while the one at Oxford was based on nuclear families. The Cambridgians might have spent long hours carving wooden statues of their guardian spirits whereas the Oxonians may have worshipped through dance. The former perhaps believed in reincarnation, while the latter thought this was nonsense. In one society, homosexual relationships might have been accepted, while in the other they were taboo.
In other words, while anthropological observations of modern foragers can help us understand some of the possibilities available to ancient foragers, the ancient horizon of possibilities was much broader, and much of it is hidden from our view. The heated debates about Homo Sapiens’ “natural way of life” miss the main point. Ever since the Cognitive Revolution, there hasn’t been a natural way of life for Sapiens. There are only cultural choices, from among a bewildering palette of [biological] possibilities.
Take the debate between monogamy and polygamy. Both have certainly been tried before and exist in some form in modern society, with each achieving various levels of success. It’s likely that most modern humans consider monogamy the most “natural” arrangement since it’s the most popular one, but we see the evidence of its failure all the time. Divorces are as common as death-do-us-part marriages, at least in most of Western civilization. We have a host of psychological problems tied to the constant trials of a long term one-to-one relationship. The proponents of polygamy would point to the failures of marriage as being due to the biological prison of monogamy, the unnaturalness of it all.
Wait, no no, say the monogamists. Our biology points the other way: We are meant to live in a tight-knit nuclear family with one spouse. This encourages caring and survival, and strong, unavoidable emotions like jealousy give us evidence that it’s probably right there in our genes. The prevalence of monogamy in modern society must be some evidence that it’s the real contender.
Who’s right? The truth is we don’t really know, and a study of the past is not as revealing as you might think. The Monogamy v. Polygamy debate also points to an even greater problem with our understanding of man in the period before he started writing things down, which is that our knowledge is dwarfed by our lack of knowledge.
Compared to the many things we do know about our past, there are many times more things we don’t know, and in fact can’t know. Our historical methods have deep limitations:
Unfortunately, there are few certainties regarding the lives of our forager ancestors. The debate between the ‘ancient commune’ and the ‘eternal monogamy’ schools is based on flimsy evidence. We obviously have no written records from the age of foragers, and the archaeological evidence consists mainly of fossilized bones and stone tools. Artifacts made of more perishable materials — such as wood, bamboo, or leather — survive only under unique conditions. The common impression that pre-agricultural humans lived in an age of stone is a misconception based on this archaeological bias. The Stone Age should more accurately be called the Wood Age, because most of the tools used by ancient hunter-gatherers were made of wood.
Foragers moved house every month, every week, and sometimes even every day, toting whatever they had on their backs. There were no moving companies, wagons, or even pack animals to share the burden. They consequently had to make do with only the most essential possessions. It’s reasonable to presume, then, that the greater part of their mental, religious and emotional lives was conducted without the help of artifacts. An archaeologist working 100,000 years from now could piece together a reasonable picture of Muslim belief and practice from the myriad objects he unearthed in a ruined mosque. But we are largely at a loss in trying to comprehend the beliefs and rituals of ancient hunter-gatherers. It’s much the same dilemma that a future historian would face if he had to depict the social world of twenty-first century teenagers solely on the basis of their surviving snail mail — since no records will remain of their phone conversations, emails, blogs and text messages.
This archaeological bias, as Harari terms it, calls to mind the drunk looking under the streetlight for his keys because “That’s where the light is!” We study what is most study-able. The problem is that this bias leaves behind a whole bunch of interesting questions, a whole lot of interesting stuff that probably occurred.
Take the difference between understanding the diet of the ancient person and understanding how they actually felt about their food, and what that said about who they were:
The basics of the forager economy can be reconstructed with some confidence based on quantifiable and objective factors. For example, we can calculate how many calories per day a person needs in order to survive, how many calories were obtained from a pound of walnuts, and how many walnuts could be gathered from a square mile of forest. With this data, we can make an educated guess about the relative importance of walnuts in their diet.
But did they consider walnuts a delicacy or a humdrum staple? Did they believe that walnut trees were inhabited by spirits? Did they find walnut leaves pretty? If a forager boy wanted to take a forager girl to a romantic spot, did the share of a walnut tree suffice? [Ed: Did the concept of romance mean anything to them?]
That’s the thing: We don’t even really know how they felt about these things. They didn’t leave us any memoirs.
Some of the more interesting sets of questions surround religion. One thing we can reliably suppose is that man has been in an essentially constant state of religious belief.
Most scholars suppose that most ancient humans were animists, believing that all things contained a life-force, be it a rock, a tree, a squirrel, or a human. In addition, there were spirits, fairies, angels, and other mystical creatures that play a role in the world. Human beings, in this worldview, are just part of a larger system; there are no Gods puppeteering our outcomes or watching us with a particularly close eye. We’re not the center of the universe.
But even if we can reliably suppose that most forager humans were animists, and it’s up for debate how reliable that is, there were very likely to be hundreds or thousands of varieties within that framework. It’s really the same as the “theistic” view of the world, which has been shared by billions of modern humans in widely varying forms:
The generic rubric ‘theists’ covers Jewish rabbis from eighteenth-century Poland, witch-burning Puritans from seventeenth-century Massachusetts, Aztec priests from fifteenth-century Mexico, Sufi mystics from twelfth-century Iran, tenth-century Viking warriors, second-century Roman legionnaires, and first-century Chinese bureaucrats. Each of these view others’ beliefs and practices as weird and heretical. The differences between the beliefs of groups of ‘animistic’ foragers were probably just as big. Their religious experience may have been turbulent and filled with controversies, reforms, and revolutions.
We assume they were animists, but that’s not very informative. We don’t know which spirits they prayed to, which festivals they celebrated, or which taboos they observed. Most importantly, we don’t know what stories they told. It’s one of the biggest holes in our understand of human history.
Conquest is another fascinating aspect of history. It’s comparatively easy for us to study Columbus and Pizarro and understand why they sought to explore new worlds, and why their wealthy backers supported the cause. Much of it is recorded and has been analyzed, summarized, and synthesized for our modern study.
But what of the conquests of the vastly longer period of pre-recorded history, what of them? We know they happened: The fossil record tells us that we started out as a species in the African/Asian landmass, bounded by the sea, and clearly, we broke free. Our technology was likely to have been barely up to the task, but we went ahead anyway.
Following the Cognitive Revolution, Sapiens acquired technology, the organizational skills, and perhaps even the vision necessary to break out of Afro-Asia and settled the Outer World. Their first achievement was the colonization of Australia some 45,000 years ago. Experts are hard-pressed to explain this feat. In order to reach Australia, humans had to cross a number of sea channels, some more than 60 miles wide , and upon arrival they had to adapt nearly overnight to a completely new ecosystem.
The journey of the first humans to Australia is one of the most important events in history, at least as important as Columbus’ journey to America or the Apollo 11 expedition to the moon. It was the first time any human had managed to leave the Afro-Asian ecological system — indeed, the first time any large terrestrial mammal had managed to cross from Afro-Asia to Australia.
Imagine what it must have been like arriving in Australia, with the entirety of human history having taken place on another continent with different animals, weather, plants, and geology. It makes the Moon landing seem kinda tame by comparison.
But the even more salient question is why? What would have motivated a band, or many bands of ancient human foragers to take a risky journey across the sea to new land? Were they trying to escape persecution? Were they curious conquerers? Were they trying to prove something? Were they guided by spirits? At current, we can’t know those answers, and thus our understanding of deep history has limits.
Harari calls this The Curtain of Silence.
This curtain of silence shrouds tens of thousands of years of history. These long millennia may well have witnessed wars and revolutions, ecstatic religious movements, profound philosophical theories, incomparable artistic masterpieces. The foragers may have had their all-conquering Napoleons, who ruled empires half the size of Luxembourg; gifted Beethovens who lacked symphony orchestras but brought people to tears with the sound of their bamboo flutes; and charismatic prophets who revealed the words of a local oak tree rather than those of a creator god. But these are all mere guesses. The curtain of silence is so thick that we cannot even be sure such things occurred — let alone describe them in detail.
In the end, though, our guesses make the study of history a fascinating adventure.
“When you come to one of the many moments in life where you must give an account of yourself, provide a ledger of what you have been, and done, and meant to the world, do not, I pray, discount that you filled a dying man’s days with a sated joy, a joy unknown to me in all my prior years, a joy that does not hunger for more and more but rests, satisfied. In this time, right now, that is an enormous thing.”
Dr. Paul Kalanithi was 36 years old and in his final year as a neurosurgical resident when he was diagnosed with terminal cancer. His beautifully written memoir, When Breath Becomes Air, published posthumously, chronicles his lifelong quest to learn what gives life meaning.
Kalanithi’s wife Lucy, also a doctor, explains in the epilogue why he chose to write about his experience.
Paul confronted death – examined it, wrestled with it, accepted it – as a physician and a patient. He wanted to help people understand death and face their mortality. Dying in one’s fourth decade is unusual now, but dying is not.
In a letter to a friend, he writes, “That’s what I’m aiming for, I think. Not the sensationalism of dying, and not exhortations to gather rosebuds, but: Here’s what lies up ahead on the road.”
In When Breath Becomes Air, Kalanithi shares his journey along that road as he transitions from doctor to patient and comes face-to-face with his own mortality.
Before studying medicine at Yale, Kalanithi had earned a BA and an MA in English literature, a BA in biology and an MPhil in the history and philosophy of science and medicine. He was interested in discovering where “biology, morality, literature and philosophy intersect”.
I was driven less by achievement than by trying to understand, in earnest: What makes human life meaningful? I still felt literature provided the best account of the life of the mind, while neuroscience laid down the most elegant rules of the brain.
Throughout college, my monastic, scholarly study of human meaning would conflict with my urge to forge and strengthen the human relationships that formed that meaning. If the unexamined life was not worth living, was the unlived life worth examining?
After years of theoretical discussions about mortality and the meaning of life, he came to the conclusion that “direct experience of life-and-death questions was essential to generating substantial moral opinions about them”. And so, he chose to study medicine.
In Being Mortal: Medicine and What Matters in the End, Dr. Atul Gawande, calls for change in the way medical professionals deal with illness. While medical science has given us the ability to extend life, it does not ask – or answer – the question of when life still has meaning.
The problem with medicine and the institutions it has spawned for the care of the sick and the old is not that they have had an incorrect view of what makes life significant. The problem is that they have had almost no view at all. Medicine’s focus is narrow. Medical professionals concentrate on repair of health, not sustenance of the soul. Yet – and this is the painful paradox – we have decided that they should be the ones who largely define how we live in our waning days.
As a neurosurgical resident, Kalanithi was well aware of this paradox and the interplay between our medical choices and the things that give our lives meaning.
While all doctors treat diseases, neurosurgeons work in the crucible of identity: every operation on the brain is, by necessity, a manipulation of the substance of our selves, and every conversation with a patient undergoing brain surgery cannot help but confront this fact…At those critical junctures, the question is not simply whether to live or die but what kind of life is worth living. Would you trade your ability – or your mother’s – to talk for a few extra months of mute life? The expansion of your visual blind spot in exchange for eliminating the small possibility of a fatal brain hemorrhage? Your right hand’s function to stop seizures? How much neurologic suffering would you let your child endure before saying that death is preferable? Because the brain mediates our experience of the world, any neurosurgical problem forces a patient and family, ideally with a doctor as a guide, to answer this question: What makes life meaningful enough to go on living?
Both Gawande and Kalanithi help us recognize that knowing what we – and our loved ones – value in life will inform the choices we make about death when that time comes.
What happens to your identity and sense of purpose when your plan for the next 40 years is suddenly wiped off the table?
My brother Jeevan had arrived at my bedside. “You’ve accomplished so much,” he said. “You know that, don’t you?”
I sighed. He meant well, but the words rang hollow. My life had been building potential, potential that would now go unrealized. I had planned to do so much, and I had come so close. I was physically debilitated, my imagined future and my personal identity collapsed, and I faced the same existential quandaries my patients faced. The lung cancer was confirmed. My carefully planned and hard-won future no longer existed.
After the diagnosis, Kalanithi was forced to re-evaluate what was most valuable to him.
While being trained as a physician and scientist had helped me process the data and accept the limits of what that data could reveal about my prognosis, it didn’t help me as a patient. It didn’t tell Lucy and me whether we should go ahead and have a child, or what it meant to nurture a new life while mine faded. Nor did it tell me whether to fight for my career, to reclaim the ambitions I had single-mindedly pursued for so long, but without the surety of the time to complete them.
Like my own patients, I had to face my mortality and try to understand what made my life worth living…
The old adage to ‘live each day as if it were your last’ loses strength under scrutiny. What gives our lives meaning on any given day depends to some extent on how imminent we believe death is.
Grand illnesses are supposed to be life-clarifying. Instead, I knew I was going to die – but I’d known that before. My state of knowledge was the same, but my ability to make lunch plans had been shot to hell. The way forward would seem obvious, if only I knew how many months or years I had left. Tell me three months, I’d spend time with family. Tell me one year, I’d write a book. Give me ten years, I’d go back to treating diseases. The truth that you live one day at a time didn’t help: What was I supposed to do with that day?
In searching for solace, Kalanithi returned to his love of literature.
And so it was literature that brought me back to life during this time. The monolithic uncertainty of my future was deadening; everywhere I turned, the shadow of death obscured the meaning of any action. I remember the moment my overwhelming unease yielded, when that seemingly impassable sea of uncertainty parted. I woke up in pain, facing another day – no project beyond breakfast seemed tenable. I can’t go on, I thought, and immediately, its antiphon responded, completing Samuel Beckett’s seven words, words I had learned long ago as an undergraduate: I’ll go on. I got out of bed and took a step forward, repeating the phrase over and over “I can’t go on. I’ll go on.”
That morning, I made a decision: I would push myself to return to the OR. Why? Because I could. Because that’s who I was. Because I would have to learn to live in a different way, seeing death as an imposing itinerant visitor but knowing that even if I’m dying, until I actually die, I am still living.
In one of the most profound passages of the book, Lucy and Paul discuss whether to have a child, “Don’t you think saying goodbye to your child will make your death more painful?” she asks, and he responds, simply, “Wouldn’t it be great if it did?”
Kalanithi comes to believe that life is about striving, not about avoiding suffering.
Years ago, it had occurred to me that Darwin and Nietzsche agreed on one thing: the defining characteristic of the organism is striving. Describing life otherwise was like painting a tiger without stripes. After so many years of living with death, I’d come to understand that the easiest death wasn’t necessarily the best. We talked it over. Our families gave their blessing. We decided to have a child. We would carry on living instead of dying.
He leaves behind this impassioned message for his daughter, Cady, eight months old at the time of his death.
When you come to one of the many moments in life where you must give an account of yourself, provide a ledger of what you have been, and done, and meant to the world, do not, I pray, discount that you filled a dying man’s days with a sated joy, a joy unknown to me in all my prior years, a joy that does not hunger for more and more but rests, satisfied. In this time, right now, that is an enormous thing.
Two related Farnam Street Posts:
Tiny Beautiful Things. A famous advice columnist operates under a pen name allowing her to be intimate and frank — dispensing advice built on a foundation of deep personal experience.
Richard Feynman’s Love Letter to His Wife Sixteen Months After Her Death. The famous physicist understood more about living a meaningful life than physics.
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“The physical universe is subject to rational analysis and the methods of science. The spiritual universe is not. All of us have had experiences that are not subject to rational analysis. Besides religion, much of our art and our values and our personal relationships with other people spring from such experiences.”
Alan Lightman, whose beautiful meditation on our yearning for permanence in a universe that offers none, looks at the tension between science and religion in The Accidental Universe: The World You Thought You Knew.
In the essay, “The Spiritual Universe,” Lightman sets out to reconcile his personal struggle between religion and science. In so doing he sets out the necessary criteria for science to be compatible with religion:
The first step in this journey is to state what I will call the central doctrine of science: All properties and events in the physical universe are governed by laws, and those laws are true at every time and place in the universe. Although scientists do not talk explicitly about this doctrine, and my doctoral thesis adviser never mentioned it once to his graduate students, the central doctrine is the invisible oxygen that most scientists breathe. We do not, of course, know all the fundamental laws at the present time. But most scientists believe that a complete set of such laws exists and, in principle, that it is discoverable by human beings, just as nineteenth-century explorers believed in the North Pole although no one had yet reached it.
Our knowledge of scientific laws is provisional. We do not know all the laws but we believe in a complete set of them. We further believe, in principle anyway, that humans will uncover these laws. An example of a scientific law is the conservation of energy.
The total amount of energy in a closed system remains constant. The energy in an isolated container may change form, as when the chemical energy latent in a fresh match changes into the heat and light energy of a burning flame— but, according to the law of the conservation of energy, the total amount of energy does not change.
Even scientific laws that we already know about are updated and refined over time. Lightman offers the replacement of Newton's law of gravity (1687) by Einstein's deeper and more accurate law of gravity (1915). These revisions are part of the very fabric of science.
Next, Lightman provides a working definition of God.
I would not pretend to know the nature of God, if God does indeed exist, but for the purposes of this discussion, and in agreement with almost all religions, I think we can safely say that God is understood to be a Being not restricted by the laws that govern matter and energy in the physical universe. In other words, God exists outside matter and energy. In most religions, this Being acts with purpose and will, sometimes violating existing physical law (that is, performing miracles), and has additional qualities such as intelligence, compassion, and omniscience.
Lightman then offers a continium of religious beliefs based on the degree to which God acts in the world. At one end is atheism — or denying the existence of god. Moving along the spectrum, we find deism, which was a prominent view in the seventeenth and eighteenth centuries that God created the universe but has not acted since this spark.
Voltaire was a deist. As God's role expands we find immanentism, which holds that God created the universe and its scientific laws. Under this view, God continues to act through the repeated application of those laws. We can probably put Einstein in the immanentism camp. (Philosophically both deism and immanentism are similar because God does not perform miracles.)
Opposite atheism lies interventionism. Most religions, including Christianity, Judaism, Islam, and Hinduism subscribe to this view, which is that God created the universe and its laws and occasionally violates the laws to create unpredictable results.
Lightman argues that all of these views, except interventionism, agree with science.
Starting with these axioms, we can say that science and God are compatible as long as the latter is content to stand on the sidelines once the universe has begun. A God that intervenes after the cosmic pendulum has been set into motion, violating the physical laws, would clearly upend the central doctrine of science.
Lightman cites Francis Collins, who offers some thoughtful advice on reconciling a belief in an interventionist God and science, or at least, deciding which to turn to for answers to the right kinds of questions. They are often very different.
“I’ve not had a problem reconciling science and faith since I became a believer at age 27 … if you limit yourself to the kinds of questions that science can ask, you’re leaving out some other things that I think are also pretty important, like why are we here and what’s the meaning of life and is there a God? Those are not scientific questions.
Under this reconciliation, miracles cannot be analyzed by the methods of science. This is an echo of Richard Feynman, who put it most clearly in one of his letters, saying that science only tells us if we do something then what will happen? Cause and effect. It doesn't give us any guidance on the question of should we do it?
Lightman, himself, falls in the atheist camp.
I am an atheist myself. I completely endorse the central doctrine of science. And I do not believe in the existence of a Being who lives beyond matter and energy, even if that Being refrains from entering the fray of the physical world. However, I certainly agree with (Other Scientists) that science is not the only avenue for arriving at knowledge, that there are interesting and vital questions beyond the reach of test tubes and equations. Obviously, vast territories of the arts concern inner experiences that cannot be analyzed by science. The humanities, such as history and philosophy, raise questions that do not have definite or unanimously accepted answers.
And yet we must believe in things we cannot (yet) prove. Lightman himself believes in the central doctrine which cannot be proven. At most we can only say there is no evidence to contradict it. This is what Karl Popper called real science – a process by which we hypothesize and then attack our hypotheses. A scientific “fact” is one that has stood up to extraordinary scrutiny.
With much of life, and much meaning in the world, there are often things outside of the scientific realm. These are worth considering.
I believe there are things we take on faith, without physical proof and even sometimes without any methodology for proof. We cannot clearly show why the ending of a particular novel haunts us. We cannot prove under what conditions we would sacrifice our own life in order to save the life of our child. We cannot prove whether it is right or wrong to steal in order to feed our family, or even agree on a definition of “right” and “wrong.” We cannot prove the meaning of our life, or whether life has any meaning at all. For these questions, we can gather evidence and debate, but in the end we cannot arrive at any system of analysis akin to the way in which a physicist decides how many seconds it will take a one-foot-long pendulum to make a complete swing. The previous questions are questions of aesthetics, morality, philosophy. These are questions for the arts and the humanities. These are also questions aligned with some of the intangible concerns of traditional religion.
Lightman recalls his time as a grad student in physics and the concept of a “well-posed problem” — a question with “enough clarity and precision that it is guaranteed an answer.” Put another way, scientists are trained not to “waste time on questions that do not have clear and definite answers.” And yet questions without clear and definite answers are sometimes just as important. Just because we can't apply the scientific method to them doesn't mean we shouldn't consider them.
[A]rtists and humanists often don’t care what the answer is because definite answers don’t exist to all interesting and important questions. Ideas in a novel or emotion in a symphony are complicated with the intrinsic ambiguity of human nature. That is why we can never fully understand why the highly sensitive Raskolnikov brutally murdered the old pawnbroker in Crime and Punishment, whether Plato’s ideal form of government could ever be realized in human society, whether we would be happier if we lived to be a thousand years old. For many artists and humanists, the question is more important than the answer.
As the German Poet Rainer Maria Rilke put it a century ago: “We should try to love the questions themselves, like locked rooms and like books that are written in a very foreign tongue.”
“As human beings,” Lightman argues, “don’t we need questions without answers as well as questions with answers?”
The God Delusion, a widely read book by Richard Dawkins, uses modern tools to attack two common arguments for the existence of God: Intelligent Design (only an intelligent and powerful being could have designed the universe) and that only the action and will of God explains our morality and desire to help others. Dawkins convincingly shows that Earth could have arisen from the laws of nature and random processes, without the intervention of a supernatural and intelligent Designer. Our sense of morality and altruism could be a logical derivative of natural selection.
However, as Lightman reminds us, refuting or falsifying the arguments put forward to support a proposition does not necessarily falsify the proposition itself.
Science can never know what created our universe. Even if tomorrow we observed another universe spawned from our universe, as could hypothetically happen in certain theories of cosmology, we could not know what created our universe. And as long as God does not intervene in the contemporary universe in such a way as to violate physical laws, science has no way of knowing whether God exists or not. The belief or disbelief in such a Being is therefore a matter of faith.
Lightman is troubled by Dawkins' wholesale dismissal of religion.
Faith, in its broadest sense, is about far more than belief in the existence of God or the disregard of scientific evidence. Faith is the willingness to give ourselves over, at times, to things we do not fully understand. Faith is the belief in things larger than ourselves. Faith is the ability to honor stillness at some moments and at others to ride the passion and exuberance that is the artistic impulse, the flight of the imagination, the full engagement with this strange and shimmering world.
Indeed, William & Ariel Durant have argued that we need religion; it is part of our fabric of understanding and living in the world.
With that, Lightman brings the essay to a beautiful conclusion.
The physical and spiritual universes each have their own domains and their own limitations. The question of the age of planet Earth, for example, falls squarely in the domain of science, since there are reliable tests we can perform, such as using the rate of disintegration of radioactive rocks, to determine a definitive answer. Such questions as “What is the nature of love?” or “Is it moral to kill another person in time of war?” or “Does God exist?” lie outside the bounds of science but fall well within the realm of religion. I am impatient with people who, like Richard Dawkins, try to disprove the existence of God with scientific arguments. Science can never prove or disprove the existence of God, because God, as understood by most religions, is not subject to rational analysis. I am equally impatient with people who make statements about the physical universe that violate physical evidence and the known laws of nature. Within the domain of the physical universe, science cannot hold sway on some days but not on others. Knowingly or not, we all depend on the consistent operation of the laws of nature in the physical universe day after day— for example, when we board an airplane, allow ourselves to be lofted thousands of feet in the air, and hope to land safely at the other end. Or when we stand in line to receive a vaccination against the next season’s influenza.
Some people believe that there is no distinction between the spiritual and physical universes, no distinction between the inner and the outer, between the subjective and the objective, between the miraculous and the rational. I need such distinctions to make sense of my spiritual and scientific lives. For me, there is room for both a spiritual universe and a physical universe, just as there is room for both religion and science. Each universe has its own power. Each has its own beauty, and mystery. A Presbyterian minister recently said to me that science and religion share a sense of wonder. I agree.
The Accidental Universe is a mind-bending read on the known and unknowable, offering a window into our universe and some of the profound questions of our time.
“Even the skeptical historian develops a humble respect for religion, since he sees it functioning, and seemingly indispensable, in every land and age.”
Will and Ariel Durant have written a masterpiece in The Lessons of History. Inside the book, which is a condensed version of his life work, you can find an interesting chapter entitled Religion and History that explores the role of religion throughout history.
Scientists often question the value of religion. Durant demurs:
To the unhappy, the suffering, the bereaved, the old, it has brought supernatural comforts valued by millions of souls as more precious than any natural aid. It has helped parents and teachers to discipline the young. It has conferred meaning and dignity upon the lowliest existence, and through its sacraments has made for stability by transforming human covenants into solemn relationships with God. It has kept the poor (said Napoleon) from murdering the rich. For since the natural inequality of men dooms many of us to poverty or defeat, some supernatural hope may be the sole alternative to despair. Destroy that hope, and class war is intensified. Heaven and utopia are buckets in a well: when one goes down the other goes up; when religion declines Communism grows.
The role of religion and morality is not clear at first. According to Petronius, who echoed Lucretius, “it was fear that first made the gods.” The fear he was talking about was a fear of the unexplainable — fear of hidden forces in the earth, oceans, skies, and rivers.
Religion became the propitiatory worship of these forces through offerings, sacrifice, incantation, and prayer. Only when priests used these fears and rituals to support morality and law did religion become a force vital and rival to the state. It told the people that the local code of morals and laws had been dictated by the gods.
In the eyes of the Durants, the effect of this new moral law was to dampen the worst of moral disorder—sensuality, drunkenness, coarseness, greed, dishonesty, robbery, and violence.
“Though the Church served the state,” they write, “it claimed to stand above all states, as morality should stand above power.” The idea of a moral superstate briefly come to fulfillment in the century after The Emperor Henry IV submitted to Pope Gregory VII at Canossa in 1077. The dream crumbled, however, under attacks of nationalism, skepticism and human frailty.
The Church, after all, was manned with men who proved all too human in their failings of greed and power. As states became stronger and wealthier they made the papacy a political tool. “Kings,” the Durants write, “became strong enough to compel a pope to dissolve the Jesuit order which had so devotedly supported the popes.” In response, the Church stooped to fraud. Increasingly the religious hierarchy spent time promoting orthodoxy rather than morality. The Inquisition almost killed the Church.
Even while preaching peace the Church fomented religious wars in sixteenth-century France and the Thirty Years’ War in seventeenth-century Germany. It played only a modest part in the outstanding advance of modern morality— the abolition of slavery.
This allowed the philosophers to take the lead in the humanitarian movements that “alleviated the evils of our time.”
History has justified the Church in the belief that the masses of mankind desire a religion rich in miracle, mystery, and myth. Some minor modifications have been allowed in ritual, in ecclesiastical costume, and in episcopal authority; but the Church dares not alter the doctrines that reason smiles at, for such changes would offend and disillusion the millions whose hopes have been tied to inspiring and consolatory imaginations. No reconciliation is possible between religion and philosophy except through the philosophers’ recognition that they have found no substitute for the moral function of the Church, and the ecclesiastical recognition of religious and intellectual freedom.
Does history support a belief in God?
If by God we mean not the creative vitality of nature but a supreme being intelligent and benevolent, the answer must be a reluctant negative. Like other departments of biology, history remains at bottom a natural selection of the fittest individuals and groups in a struggle wherein goodness receives no favors, misfortunes abound, and the final test is the ability to survive. Add to the crimes, wars, and cruelties of man the earthquakes, storms, tornadoes, pestilences, tidal waves, and other “acts of God” that periodically desolate human and animal life, and the total evidence suggests either a blind or an impartial fatality, with incidental and apparently haphazard scenes to which we subjectively ascribe order, splendor, beauty, or sublimity. If history supports any theology this would be a dualism like the Zoroastrian or Manichaean: a good spirit and an evil spirit battling for control of the universe and men’s souls. These faiths and Christianity (which is essentially Manichaean) assured their followers that the good spirit would win in the end; but of this consummation history offers no guarantee. Nature and history do not agree with our conceptions of good and bad; they define good as that which survives, and bad as that which goes under; and the universe has no prejudice in favor of Christ as against Genghis Khan.
Our Place in the Cosmos
As science further develops, it shows our minuscule place in the cosmos. This knowledge further impairs Religion. We can date the beginning of the decline with Giordano Bruno and then with Copernicus (1543). In 1611 John Donne was “mourning that the earth had become a mere suburb in the world.” All was thrown into doubt. Francis Bacon proclaimed that science was the religion of the modern man. This was the generation that began the “death of God” as an external deity.
So great an effect required many causes besides the spread of science and historical knowledge. First, the Protestant Reformation, which originally defended private judgment. Then the multitude of Protestant sects and conflicting theologies, each appealing to both Scriptures and reason. Then the higher criticism of the Bible, displaying that marvelous library as the imperfect work of fallible men. Then the deistic movement in England, reducing religion to a vague belief in a God hardly distinguishable from nature. Then the growing acquaintance with other religions, whose myths, many of them pre-Christian, were distressingly similar to the supposedly factual bases of one’s inherited creed. Then the Protestant exposure of Catholic miracles, the deistic exposure of Biblical miracles, the general exposure of frauds, inquisitions, and massacres in the history of religion. Then the replacement of agriculture— which had stirred men to faith by the annual rebirth of life and the mystery of growth— with industry, humming daily a litany of machines, and suggesting a world machine. Add meanwhile the bold advance of skeptical scholarship, as in Bayle, and of pantheistic philosophy, as in Spinoza; the massive attack of the French Enlightenment upon Christianity; the revolt of Paris against the Church during the French Revolution. Add, in our own time, the indiscriminate slaughter of civilian populations in modern war. Finally, the awesome triumphs of scientific technology, promising man omnipotence and destruction, and challenging the divine command of the skies.
In a way Christianity lent a hand to its reduced place, by fostering a moral sense in believers that could no longer tolerate the vengeful God of traditional Theology.
The idea of hell disappeared from educated thought, even from pulpit homilies. Presbyterians became ashamed of the Westminster Confession, which had pledged them to belief in a God who had created billions of men and women despite his foreknowledge that, regardless of their virtues and crimes, they were predestined to everlasting hell. Educated Christians visiting the Sistine Chapel were shocked by Michelangelo’s picture of Christ hurling offenders pell-mell into an inferno whose fires were never to be extinguished; was this the “gentle Jesus, meek and mild,” who had inspired our youth?
The industrial revolution replaced Christian with secular institutions.
That states should attempt to dispense with theological supports is one of the many crucial experiments that bewilder our brains and unsettle our ways today. Laws which were once presented as the decrees of a god-given king are now frankly the confused commands of fallible men. Education, which was the sacred province of god-inspired priests, becomes the task of men and women shorn of theological robes and awe, and relying on reason and persuasion to civilize young rebels who fear only the policeman and may never learn to reason at all. Colleges once allied to churches have been captured by businessmen and scientists. The propaganda of patriotism, capitalism, or Communism succeeds to the inculcation of a supernatural creed and moral code.
But one lesson of history is that religion adapts and has a habit of resurrection. Often in the past it has nearly died only to be reborn.
Generally religion and puritanism prevail in periods when the laws are feeble and morals must bear the burden of maintaining social order; skepticism and paganism (other factors being equal) progress as the rising power of law and government permits the decline of the church, the family, and morality without basically endangering the stability of the state. In our time the strength of the state has united with the several forces listed above to relax faith and morals, and to allow paganism to resume its natural sway. Probably our excesses will bring another reaction; moral disorder may generate a religious revival; atheists may again (as in France after the debacle of 1870) send their children to Catholic schools to give them the discipline of religious belief.
Religion and Morality
If we are wondering whether history warrants the conclusion that religion is necessary for morality — “that natural ethic is too weak to withstand the savagery that lurks under civilization and emerges in our dreams, crimes, and wars” — we need look no further than the answer given by Joseph de Maistre who said: “I do not know what the heart of a rascal may be; I know what is in the heart an an honest man; it is horrible.” Whether religion must be the force to temper the hearts of future men and women, the Durants think that's certainly been the case in the past:
There is no significant example in history, before our time, of a society successfully maintaining moral life without the aid of religion. France, the United States, and some other nations have divorced their governments from all churches, but they have had the help of religion in keeping social order. Only a few Communist states have not merely dissociated themselves from religion but have repudiated its aid; and perhaps the apparent and provisional success of this experiment in Russia owes much to the temporary acceptance of Communism as the religion (or, as skeptics would say, the opium) of the people, replacing the church as the vendor of comfort and hope. If the socialist regime should fail in its efforts to destroy relative poverty among the masses, this new religion may lose its fervor and efficacy, and the state may wink at the restoration of supernatural beliefs as an aid in quieting discontent. “As long as there is poverty there will be gods.”
“Science does not reveal the meaning of our existence, but it does draw back some of the veils.”
“Be not deceived,” Epictetus writes in The Discourses, “every animal is attached to nothing so much as to its own interest.” Few things are more in our nature than our yearning for permanence. And yet all evidence argues against us.
This profound human contradiction is what physicist Alan Lightman — the first person to receive dual appointments in sciences and humanities at MIT — explores in one of the essays in The Accidental Universe: The World You Thought You Knew.
In the foreword to The Accidental Universe, Lightman tells a story of attending a lecture given by the Dalai Lama at the Massachusetts Institute of Technology. Among other things, the Dalai Lama spoke on the Buddhist concept of sunyata, which translates as “emptiness.” More specifically this doctrine means that objects in the physical universe are empty of inherent meaning — objects only receive meaning when we attach it to them with our thoughts and beliefs. This calls into question what is real.
As a scientist, I firmly believe that atoms and molecules are real (even if mostly empty space) and exist independently of our minds. On the other hand, I have witnessed firsthand how distressed I become when I experience anger or jealousy or insult, all emotional states manufactured by my own mind. The mind is certainly its own cosmos.
As Milton wrote in Paradise Lost, “It [the mind] can make a heaven of hell or a hell of heaven.”
In our constant search for meaning in this baffling and temporary existence, trapped as we are within our three pounds of neurons, it is sometimes hard to tell what is real. We often invent what isn’t there. Or ignore what is. We try to impose order, both in our minds and in our conceptions of external reality. We try to connect. We try to find truth. We dream and we hope. And underneath all of these strivings, we are haunted by the suspicion that what we see and understand of the world is only a tiny piece of the whole.
Science does not reveal the meaning of our existence, but it does draw back some of the veils.
We often think of the world as the totality of physical reality.
The word “universe” comes from the Latin unus, meaning “one,” combined with versus, which is the past participle of vertere, meaning “to turn.” Thus the original and literal meaning of “universe” was “everything turned into one.”
In the first essay “The Accidental Universe,” Lightman argues there is a possibility of multiple universes and multiple space-time continuums. But even if there is only a single universe, “there are many universes within our one universe, some visible and some not.” It all depends on your vantage point.
The challenge arises from explaining what we cannot see in a physical sense but can reason from deductions. We are like a pilot — relying our our incomplete mental instruments to guide us. We must believe what we cannot see and to a large extent we must believe what we cannot prove.
In, The Temporary Universe, one of the best essays in the collection, Lightman sets out to explore our attachment to youth, immortality, and the familiar, despite their fleeting nature. The essay explores a profound contradiction of human existence — our longing for immortality.
I don’t know why we long so for permanence, why the fleeting nature of things so disturbs. With futility, we cling to the old wallet long after it has fallen apart. We visit and revisit the old neighborhood where we grew up, searching for the remembered grove of trees and the little fence. We clutch our old photographs. In our churches and synagogues and mosques, we pray to the everlasting and eternal. Yet, in every nook and cranny, nature screams at the top of her lungs that nothing lasts, that it is all passing away. All that we see around us, including our own bodies, is shifting and evaporating and one day will be gone. Where are the one billion people who lived and breathed in the year 1800, only two short centuries ago?
Physicists call it the second law of thermodynamics. It is also called the arrow of time. Oblivious to our human yearnings for permanence, the universe is relentlessly wearing down, falling apart, driving itself toward a condition of maximum disorder. It is a question of probabilities. You start from a situation of improbable order, like a deck of cards all arranged according to number and suit, or like a solar system with several planets orbiting nicely about a central star. Then you drop the deck of cards on the floor over and over again. You let other stars randomly whiz by your solar system, jostling it with their gravity. The cards become jumbled. The planets get picked off and go aimlessly wandering through space. Order has yielded to disorder. Repeated patterns to change. In the end, you cannot defeat the odds. You might beat the house for a while, but the universe has an infinite supply of time and can outlast any player.
We can't live forever. Our lives are controlled by our genes in each cell. The raison d'être for most of these genes is to pass on instructions for how to build.
Some of these genes must be copied thousands of times; others are constantly subjected to random chemical storms and electrically unbalanced atoms, called free radicals, that disrupt other atoms. Disrupted atoms, with their electrons misplaced, cannot properly pull and tug on nearby atoms to form the intended bonds and architectural forms. In short, with time the genes get degraded. They become forks with missing tines. They cannot quite do their job. Muscles, for example. With age, muscles slacken and grow loose, lose mass and strength, can barely support our weight as we toddle across the room. And why must we suffer such indignities? Because our muscles, like all living tissue, must be repaired from time to time due to normal wear and tear. These repairs are made by the mechano growth factor hormone, which in turn is regulated by the IGF1 gene. When that gene inevitably loses some tines … Muscle to flab. Vigor to decrepitude. Dust to dust.
Most of our bodies are in a constant cycle of dying and being rebuilt to postpone the inevitable. The gut is perhaps the most fascinating example. As you can imagine it comes in contact with a lot of nasty stuff that damages tissues.
To stay healthy, the cells that line this organ are constantly being renewed. Cells just below the intestine’s surface divide every twelve to sixteen hours, and the whole intestine is refurbished every few days. I figure that by the time an unsuspecting person reaches the age of forty, the entire lining of her large intestine has been replaced several thousand times. Billions of cells have been shuffled each go-round. That makes trillions of cell divisions and whispered messages in the DNA to pass along to the next fellow in the chain. With such numbers, it would be nothing short of a miracle if no copying errors were made, no messages misheard, no foul-ups and instructions gone awry. Perhaps it would be better just to remain sitting and wait for the end. No, thank you.
Despite the preponderance of evidence against it, our culture strives for immortality and youth. We cling to a past that was but a moment in time in Heraclitus river— photographs, memories of our children, old wallets and shoes. And yet this yearning for youth and immortality, the “elixir of life,” connects us to every civilization that has graced the earth. But it's not only our physical bodies that we want to remain young. We struggle against change — big and small.
Companies dread structural reorganization, even when it may be for the best, and have instituted whole departments and directives devoted to “change management” and the coddling of employees through tempestuous times. Stock markets plunge during periods of flux and uncertainty. “Better the devil you know than the devil you don’t.” Who among us clamors to replace the familiar and comfortable incandescent lightbulbs with the new, odd-looking, “energy-efficient” compact fluorescent lamps and light-emitting diodes? We resist throwing out our worn loafers, our thinning pullover sweaters, our childhood baseball gloves. A plumber friend of mine will not replace his twenty-year-old water pump pliers, even though they have been banged up and worn down over the years. Outdated monarchies are preserved all over the world. In the Catholic Church, the law of priestly celibacy has remained essentially unchanged since the Council of Trent in 1563.
I have a photograph of the coast near Pacifica, California. Due to irreversible erosion, California has been losing its coastline at the rate of eight inches per year. Not much, you say. But it adds up over time. Fifty years ago, a young woman in Pacifica could build her house a safe thirty feet from the edge of the bluff overlooking the ocean, with a beautiful maritime view. Five years went by. Ten years. No cause for concern. The edge of the bluff was still twenty-three feet away. And she loved her house. She couldn’t bear moving. Twenty years. Thirty. Forty. Now the bluff was only three feet away. Still she hoped that somehow, some way, the erosion would cease and she could remain in her home. She hoped that things would stay the same. In actual fact, she hoped for a repeal of the second law of thermodynamics, although she may not have described her desires that way. In the photograph I am looking at, a dozen houses on the coast of Pacifica perch right on the very edge of the cliff, like fragile matchboxes, with their undersides hanging over the precipice. In some, awnings and porches have already slid over the side and into the sea.
One constant over Earth's 4.5-billion-year history is upheaval and change.
The primitive Earth had no oxygen in its atmosphere. Due to its molten interior, our planet was much hotter than it is now, and volcanoes spewed forth in large numbers. Driven by heat flow from the core of the Earth, the terrestrial crust shifted and moved. Huge landmasses splintered and glided about on deep tectonic plates. Then plants and photosynthesis leaked oxygen into the atmosphere. At certain periods, the changing gases in the air caused the planet to cool, ice covered the Earth, entire oceans may have frozen. Today, the Earth continues to change. Something like ten billion tons of carbon are cycled through plants and the atmosphere every few years— first absorbed by plants from the air in the form of carbon dioxide, then converted into sugars by photosynthesis, then released again into soil or air when the plant dies or is eaten. Wait around a hundred million years or so, and carbon atoms are recycled through rocks, soil, and oceans as well as plants.
Shakespeare's Julius Caesar says to Cassius:
“But I am constant as the northern star,
Of whose true-fix'd and resting quality
There is no fellow in the firmament.”
We can forgive his lack of knowledge on modern astrophysics or the second law of thermodynamics. The North Star, like all stars, including the sun, is slowing dying as they consume fuel. They too will eventually explode or fade into the universe. The only reminders of existence will be cold embers floating in space.
Buddhists have long been aware of the evanescent nature of the world.
Anicca, or impermanence, they call it. In Buddhism, anicca is one of the three signs of existence, the others being dukkha, or suffering, and anatta, or non-selfhood. According to the Mahaparinibbana Sutta, when the Buddha passed away, the king deity Sakka uttered the following: “Impermanent are all component things. They arise and cease, that is their nature: They come into being and pass away.” We should not “attach” to things in this world, say the Buddhists, because all things are temporary and will soon pass away. All suffering, say the Buddhists, arises from attachment.
If only we could detach. “But,” Lightman argues, “even Buddhists believe in something akin to immortality. It is called Nirvana.”
A person reaches Nirvana after he or she has managed to leave behind all attachments and cravings, after countless trials and reincarnations, and finally achieved total enlightenment. The ultimate state of Nirvana is described by the Buddha as amaravati, meaning deathlessness. After a being has attained Nirvana, the reincarnations cease. Indeed, nearly every religion on Earth has celebrated the ideal of immortality. God is immortal. Our souls might be immortal.
Lightman argues that either we are delusional or nature is incomplete. “Either I am being emotional and vain in my wish for eternal life for myself …. or there is some realm of immortality that exists outside nature.”
If the first alternative is right, then I need to have a talk with myself and get over it. After all, there are other things I yearn for that are either not true or not good for my health. The human mind has a famous ability to create its own reality. If the second alternative is right, then it is nature that has been found wanting. Despite all the richness of the physical world— the majestic architecture of atoms, the rhythm of the tides, the luminescence of the galaxies— nature is missing something even more exquisite and grand: some immortal substance, which lies hidden from view. Such exquisite stuff could not be made from matter, because all matter is slave to the second law of thermodynamics. Perhaps this immortal thing that we wish for exists beyond time and space. Perhaps it is God. Perhaps it is what made the universe.
Of these two alternatives, I am inclined to the first. I cannot believe that nature could be so amiss. Although there is much that we do not understand about nature, the possibility that it is hiding a condition or substance so magnificent and utterly unlike everything else seems too preposterous for me to believe. So I am delusional. In my continual cravings for eternal youth and constancy, I am being sentimental. Perhaps with the proper training of my unruly mind and emotions, I could refrain from wanting things that cannot be. Perhaps I could accept the fact that in a few short years, my atoms will be scattered in wind and soil, my mind and thoughts gone, my pleasures and joys vanished, my “I-ness” dissolved in an infinite cavern of nothingness. But I cannot accept that fate even though I believe it to be true. I cannot force my mind to go to that dark place.
“A man can do what he wants,” said Schopenhauer, “but not want what he wants.”
If we are stuck with mortality can we find a beauty in this on its own? Is there something majestic in the brevity of life? Is there a value we can find from its fleeting and temporary duration?
I think of the night-blooming cereus, a plant that looks like a leathery weed most of the year. But for one night each summer its flower opens to reveal silky white petals, which encircle yellow lacelike threads, and another whole flower like a tiny sea anemone within the outer flower. By morning, the flower has shriveled. One night of the year, as delicate and fleeting as a life in the universe.
The Accidental Universe is an amazing read, balancing the laws of nature and first principles with a philosophical exploration of the world around us.