Did science promise happiness? I do not believe it. It promised truth, and the question is to know if we will ever make happiness with truth.

The vague torment of ... ambition.

Perfection is such a nuisance that I often regret having cured myself of using tobacco.

Violence has never prospered, you can't remake the world in a day. Anyone who promises to change everything for you all at once is either a fool or a rogue!

There are two men inside the artist, the poet and the craftsman. One is born a poet. One becomes a craftsman.

These young people naturally grow up with ideas different from ours, for they are born for times when we shall no longer be here

Did not one spend the first half of one's days in dreams of happiness and the second half in regrets and terrors?