A man is not old as long as he is seeking something.

God, that checkroom of our dreams.

There are moments when very little truth would be enough to shape opinion. One might be hated at extremely low cost.

Renown? I've already got more of it than those I respect, and will never have as much as those for whom I feel contempt.

One must either take an interest in the human situation or else parade before the void.

One must credit an hypothesis with all that has had to be discovered in order to demolish it.

The nobility of a human being is strictly independent of that of his convictions.