He seemed so certain about everything, didn't he? And yet none of his certainties was worth one hair of a woman's head. He wasn't even sure he was alive, because he was living like a dead man.

There can be no true goodness, nor true love, without the utmost clear-sightedness.

Fate is not in man but around him

To those who despair of everything reason cannot provide a faith, but only passion, and in this case it must be the same passion that lay at the root of the despair, namely humiliation and hatred.

The only way out [of international dictatorship] is to place international law above governments, which means [...] that there must be a parliament for making it, and that parliament must be constituted by means of worldwide elections in which all nations will take part.

Everybody knows that pestilences have a way of recurring in the world; yet somehow we find it hard to believe in ones that crash down on our heads from a blue sky.

Can one be a saint if God does not exist? That is the only concrete problem I know of today.