We are never certain

Gilbert Keith Chesterton

We are never certain; we are always ignorant to some degree.
Much of the information we have is either incorrect or incomplete.

— Peter Bernstein


Gilbert Keith Chesterton, the English literary critic and author of the Father Brown mysteries:

The real trouble with this world of ours is not that it is an unreasonable world, nor even that it is a reasonable one. The commonest kind of trouble is that it is nearly reasonable, but not quite. Life is not an illogicality; yet it is a trap for logicians. It looks just a little more mathematical and regular than it is; its exactitude is obvious, but its inexactitude is hidden; its wildness lies in wait