I study myself more than any other subject. That is my metaphysics, that is my physics.

Taking it all in all, I find it is more trouble to watch after money than to get it.

Whom conscience, ne'er asleep, Wounds with incessant strokes, not loud, but deep.

Though we may be learned by another's knowledge, we can never be wise but by our own experience.

I am further of opinion that it would be better for us to have [no laws] at all than to have them in so prodigious numbers as we have.

I determine nothing; I do not comprehend things; I suspend judgment; I examine.

Those who make a practice of comparing human actions are never so perplexed as when they try to see them as a whole and in the same light; for they commonly contradict each other so strangely that it seems impossible that they have come from the same shop.