There may be as much nobility in being last as in being first, because the two positions are equally necessary in the world, the one to complement the other.

Life is a struggle with things to maintain itself among them. Concepts are the strategic plan we form in answer to the attack.

Life is a series of collisions with the future.

We need to study the whole of history, not to fall back into it, but to see if we can escape from it.

The man who discovers a new scientific truth has previously had to smash to atoms almost everything he had learnt, and arrives at the new truth with hands blood stained from the slaughter of a thousand platitudes.

Hating someone is feeling irritation by their mere existence.

The good is, like nature, an immense landscape in which man advances through centuries of exploration.