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Isaac Watts and the Improvement of the Mind

What did an 18th-century hymn writer have to contribute to the modern understanding of the world? As it turns out, a lot. Sometimes we forget how useful the old wisdom can be.


One of the most popular and prolific Christian hymn writers of all time — including Joy to the World — was a man named Isaac Watts, who lived in England in the late 17th and early 18th century. Watts was a well educated Nonconformist (in the religious sense, not the modern one) who, along with his hymn writing, published a number of books on logic, science, and the learning process, at a time when these concepts were only just starting to grab hold as a dominant ideology, replacing the central role of religious teaching.

Watts’s book The Improvement of the Mind was an important contribution to the growing body of work emphasizing the importance of critical thinking and rational, balanced inquiry, rather than adhering to centuries of dogma. If, as Alfred North Whitehead once pronounced, modernity’s progress was due to the “invention of the method of invention,” Watts and his books (which became textbooks in English schools, including Oxford) can easily be credited with helping push the world along.

One non-conformist who would later come to be deeply influenced by Watts was the great scientist Michael Faraday. Faraday grew up in a poor area of 18th-century England and received a fairly crude education, and yet would go on to become the Father of Electromagnetism. How?

In part, Faraday credits his own “inventing the method of invention” to reading Watts’s books, particularly The Improvement of the Mind — a self improvement guide a few centuries before the internet. Watts recommended keeping a commonplace book to record facts, and Faraday did. Watts recommended he be guided by observed facts, and Faraday was. Watts recommended finding a great teacher, and Faraday starting attending lectures.

In Watts’s book, Faraday had found a guiding ethos for how to sort out truth and fiction, what we now call the scientific method. And, given his tremendous achievements from a limited starting point, it’s worth asking…what did Faraday find?


We needn’t search far to figure it out. Smack dab in Chapter One of the book, Watts lays out his General Rules for the Improvement of Knowledge.

Watts first lays out the goal of the whole enterprise. The idea is a pretty awesome one, the same ethos we promote constantly here: We all need to make decisions constantly, so why not figure out how to make better ones? You don’t have to be an intellectual to pursue this goal. Everybody has a mind worth cultivating in order to improve the practical outcome of their lives:

No man is obliged to learn and know every thing; this can neither be sought nor required, for it is utterly impossible : yet all persons are under some obligation to improve their own understanding; otherwise it will be a barren desert, or a forest overgrown with weeds and brambles. Universal ignorance or infinite errors will overspread the mind, which is utterly neglected, and lies without any cultivation.

Skill in the sciences is indeed the business and profession but of a small part of mankind; but there are many others placed in such an exalted rank in the world, as allows them much leisure and large opportunities to cultivate their reason, and to beautify and enrich their minds with various knowledge. Even the lower orders of men have particular railings in life, wherein they ought to acquire a just degree of skill; and this is not to be done well, without thinking and reasoning about them.

The common duties and benefits of society, which belong to every man living, as we are social creatures, and even our native and necessary relations to a family, a neighbourhood, or government, oblige all persons whatsoever to use their reasoning powers upon a thousand occasions; every hour of life calls for some regular exercise of our judgment, as to time and things, persons and actions; without a prudent and discreet determination in matters before as, we, shall be plunged into perpetual errors in our conduct. Now that which should always be practised, must at some time be learnt.

We then get into the Rules themselves, an 18th-century guide to becoming smarter, better, and more useful which is just as useful three hundred years later. In the Rules, Watts promotes the idea of becoming wiser, more humble, more hungry, and more broad-thinking. These are as good a guide to improving your mind as you’ll find.

Below as an abridged version of the Rules. Check them all out here or get it in book form here. Watts had a bit of a bent towards solemnity and godliness that need not be emulated (unless you’d like to, of course), but most of the Rules are as useful today as the day they were written.


Rule I. DEEPLY possess your mind with the vast importance of a good judgment, and the rich and inestimable advantage of right reasoning.

Review the instances of your own misconduct in life ; think seriously with yourselves how many follies and sorrows you had escaped, and how much guilt and misery you had prevented, if from your early years you had but taken due paius to judge aright concerning persons, times, and things. This will awaken you with lively vigour to address yourselves to the work of improving your reasoning powers, and seizing every opportunity and advantage for that end.

Rule II. Consider the weaknesses, frailties, and mistakes of human nature in general, which arise from the very constitution of a soul united to an animal body, and subjected to many inconveniences thereby.

Consider the many additional weaknesses, mistakes, and frailties, which are derived from our original apostasy and fall from a state of innocence; how much our powers of understanding are yet more darkened, enfeebled, and imposed upon by our senses, our fancies, and our unruly passions, &c.

Consider the depth and difficulty of many truths, and the flattering appearances of falsehood, whence arises an infinite variety of dangers to which we are exposed in our judgment of things.

Read with greediness those authors that treat of the doctrine of prejudices, prepossessions, and springs of error, on purpose to make your soul watchful on all sides, that it suffer itself, as far as possible, to be imposed upon by none of them.

Rule III. A slight view of things so momentous is not sufficient.

You should therefore contrive and practise some proper methods to acquaint yourself with your own ignorance, and to impress your mind with a deep and painful sense of the low and imperfect degrees of your present knowledge, that you may be incited with labour and activity to pursue after greater measures. Among others, you may find some such methods as these successful.

1. Take a wide survey now and then of the vast and unlimited regions of learning. […] The worlds of science are immense and endless.

2. Think what a numberless variety of questions and difficulties there are belonging even to that particular science in which you have made the greatest progress, and how few of them there are in which you have arrived at a final and undoubted certainty; excepting only those questions in the pure and simple mathematics, whose theorems are demonstrable, and leave scarce any doubt; and yet, even in the pursuit of some few of these, mankind have been strangely bewildered.

3. Spend a few thoughts sometimes on the puzzling enquiries concerning vacuums and atoms, the doctrine of infinites, indivisibles, and incommensurables in geometry, wherein there appear some insolvable difficulties: do this on purpose to give you a more sensible impression of the poverty of your understanding, and the imperfection of your knowledge. This will teach you what a vain thing it is to fancy that you know all things, and will instruct you to think modestly of your present attainments […]

4. Read the accounts of those vast treasures of knowledge which some of the dead have possessed, and some of the living do possess. Read and be astonished at the almost incredible advances which have been made in science. Acquaint yourself with some persons of great learning, that by converse among them, and comparing yourself with them, you may acquire a mean opinion of your own attainments, and may thereby be animated with new zeal, to equal them as far as possible, or to exceed: thus let your diligence be quickened by a generous and laudable emulation.

Rule IV. Presume not too much upon a bright genius, a ready wit, and good parts; for this, without labour and study, will never make a man of knowledge and wisdom.

This has been an unhappy temptation to persons of a vigorous and gay fancy, to despise learning and study. They have been acknowledged to shine in an assembly, and sparkle in a discourse on common topics, and thence they took it into their heads to abandon reading and labour, and grow old in ignorance; but when they had lost their vivacity of animal nature and youth, they became stupid and sottish even to contempt aud ridicule. Lucidas and Scintillo are young men of this stamp; they shine in conversation; they spread their native riches before the ignorant; they pride themselves in their own lively images of fancy, and imagine themselves wise and learned; but they had best avoid the presence of the skilful, and the test of reasoning; and I would advise them once a day to think forward a little, what a contemptible figure they will make in age.

The witty men sometimes have sense enough to know their own foible; and therefore they craftily shun the attacks of argument, or boldly pretend to despise and renounce them, because they are conscious of their own ignorance, aud inwardly confess their want of acquaintance with the skill of reasoning.

Rule V. As you are not to fancy yourself a learned man because you are blessed with a ready wit; so neither must you imagine that large and laborious reading, and a strong memory, can denominate you truly wise.

What that excellent critic has determined when he decided the question, whether wit or study makes the best poet, may well be applied to every sort of learning:

“Concerning poets there has been contest,
Whether they’re made by art, or nature best;
But if I may presume in this affair,
Among the rest my judgment to declare,
No art without a genius will avail,
And parts without the help of art will fail:
But both ingredients jointly must unite,
Or verse will never shine with a transcendent light.”
– Oldham.

It is meditation and studious thought, it is the exercise of your own reason and judgment upon all you read, that gives good sense even to the best genius, and affords your understanding the truest improvement. A boy of a strong memory may repeat a whole book of Euclid, yet be no geometrician; for he may not be able perhaps to demonstrate one single theorem. Memorino has learnt half the Bible by heart, and is become a living concordance, and a speaking index to theological folios, and yet he understands little of divinity. […]

Rule VII. Let the hope of new discoveries, as well as the satisfaction and pleasure of known trains, animate your daily industry.

Do not think learning in general is arrived at its perfection, or that the knowledge of any particular subject in any science cannot be improved, merely because it has lain five hundred or a thousand years without improvement. The present age, by the blessing of God on the ingenuity and diligence of men, has brought to light such truths in natural philosophy, and such discoveries in the heavens and the earth, as seemed to be beyond the reach of man. But may there not be Sir Isaac Newtons in every science? You should never despair therefore of finding out that which has never yet been found, unless you see something in the nature of it which renders it unsearchable, and above the reach of our faculties. […]

Rule VIII. Do not hover always on the surface of things, nor take up suddenly with mere appearances; but penetrate into the depth of matters, as far as your time and circumstances allow, especially in those things which relate to your own profession.

Do not indulge yourselves to judge of things by the first glimpse, or a short and superficial view of them; for this will fill the mind with errors and prejudices, and give it a wrong turn and ill habit of thinking, and make much work for retractation. Subito is carried away with title pages, so that he ventures to pronounce upon a large octavo at once, and to recommend it wonderfully when he had read half the preface. Another volume of controversies, of equal size, was discarded by him at once, because it pretended to treat of the Trinity, and yet he could neither find the word essence nor subsistences in the twelve first pages; but Subito changes his opinions of men and books and things so often, that nobody regards him.

As for those sciences, or those parts of knowledge, which either your profession, your leisure, your inclination, or your incapacity, forbid you to pursue with much application, or to search far into them, you must be contented with an historical and superficial knowledge of them, and not pretend to form any judgments of your own on those subjects which you understand very imperfectly.

Rule IX. Once a day, especially in the early years of life and study, call yourselves to an account what new ideas, what new proposition or truth you have gained, what further confirmation of known truths, and what advances you have made in any part of knowledge;

And let no day, if possible, pass away without some intellectual gain: such a course, well pursued, must certainly advance us in useful knowledge. It is a wise proverb among the learned, borrowed from the lips and practice of a celebrated painter,

“Let no day pass without one line at least.”

…and it was a sacred rule among the Pythagoreans, That they should every evening thrice run over the actions and affairs of the day, and examine what their conduct had been, what they had done, or what they had neglected: and they assured their pupils, that by this method they would make a noble progress on the path of virtue.

Rule X. Maintain a constant watch at all times against a dogmatical spirit;

Fix not your assent to any proposition in a firm and unalterable manner, till you have some firm and unalterable ground for it, and till you have arrived at some clear and sure evidence; till you have turned the proposition on all sides, and searched the matter through and through, so that you cannot be mistaken.

And even where you may think you have full grounds of assurance, be not too early, nor too frequent, in expressing this assurance in too peremptory and positive a manner, remembering that human nature is always liable to mistake in this corrupt and feeble state. A dogmatical spirit has man; inconveniences attending it: as

1. It stops the ear against all further reasoning upon that subject, and shuts up the mind from all farther improvements of knowledge. If you have resolutely fixed your opinion, though it be upon too slight and insufficient grounds, yet you will stand determined to renounce the strongest reason brought for the contrary opinion, and grow obstinate against the force of the clearest argument. Positive is a man of this character; and has often pronounced his assurance of the Cartesian vortexes: last year some further light broke in upon his understanding, with uncontrollable force, by reading something of mathematical philosophy; yet having asserted his former opinions in a most confident manner, be is tempted now to wink a little against the truth, or to prevaricate in his discourse upon that subject, lest by admitting conviction, he should expose himself to the necessity of confessing his former folly and mistake: and he has not humility enough for that.

2. A dogmatical spirit naturally leads us to arrogance of mind, and gives a man some airs in conversation which are too haughty and assuming. Audens is a man of learning, and very good company ; but his infallible assurance renders his carriage sometimes insupportable.


Rule XI. Though caution and slow assent will guard you against frequent mistakes and retractions; yet you should get humility and courage enough to retract any mistake, and confess an error.

Frequent changes are tokens of levity in our first determinations; yet you should never be too proud to change your opinion, nor frighted at the name of a changeling. Learn to scorn those vulgar bugbears, which confirm foolish man in his old mistakes, for fear of being charged with inconstancy. I confess it is better not to judge, than judge falsely; it is wiser to withhold our assent till we see complete evidence; but if we have too suddenly given up our assent, as the wisest man does sometimes, if we have professed what we find afterwards to be false, we should never be ashamed nor afraid to renounce a mistake. That is a noble essay which is found among the occasional papers ‘ to encourage the world to repractise retractations;’ and I would recommend it to the perusal of every scholar and every Christian.

Rule XV. Watch against the pride of your own reason, and a vain conceit of your own intellectual powers, with the neglect of divine aid and blessing.

Presume not upon great attainments in knowledge by your own self-sufficiency: those who trust to their own understandings entirely, are pronounced fools in the word of God; and it is the wisest of men gives them this character,

‘ He that trusteth in his own heart is a fool/ Prov. xxviii. 26. And the same divine writer advises us to ‘ trust in the Lord with all our heart, and not to lean to our understandings, nor to be wise in our own eyes,’ chap. iii. 5, 7*

Those who, with a neglect of religion and dependence on God, apply themselves to search out every article in the things of God by the mere dint of their own reason, have been suffered to run into wild excesses of foolery, and strange extravagance of opinions. Every one who pursues this vain course, and will not ask for the conduct of God in the study of religion, has just reason to fear he shall be left of God, and given up a prey to a thousand prejudices ; that he shall be consigned over to the follies of his own heart, and pursue his own temporal and eternal ruin. And even in common studies we should, by humility and dependence, engage the God of truth on our side. (Transcribers Note: This talk of God, pure nonsense that it is, does not diminish the value of his other rules.)