A man is never more serious than when he praise himself.

We cannot remember too often that when we observe nature, and especially the ordering of nature, it is always ourselves alone we are observing.

You believe I run after the strange because I do not know the beautiful; no, it is because you do not know the beautiful that I seek the strange.

People who never have any time on their hands are those who do the least.

He who is in love with himself has at least this advantage - he won't encounter many rivals.

We accumulate our opinions at an age when our understanding is at its weakest.

Delight at having understood a very abstract and obscure system leads most people to believe in the truth of what it demonstrates.