Change amuses the mind, but rarely profits.

The most happy man is he who knows how to bring into relation the end and beginning of his life.

Mathematics can remove no prejudices and soften no obduracy. It has no influence in sweetening the bitter strife of parties, and in the moral world generally its action is perfectly null.

Life's objective is life itself.

Deny yourself! You must deny yourself! That is the song that never ends.

It is better to do the smallest thing in the world than to hold half an hour to be too small a thing.

After fifteen minutes nobody looks at a rainbow.