We cannot put off living until we are ready.

We distinguish the excellent man from the common man by saying that the former is the one who makes great demands on himself, and the latter who makes no demands on himself.

We do not live to think, but, on the contrary, we think in order that we may succeed in surviving.

We have need of history in its entirety, not to fall back into it, but to see if we can escape from it.

We live at a time when man believes himself fabulously capable of creation, but he does not know what to create.

Biography - a system in which the contradictions of a human life are unified.

Better beware of notions like genius and inspiration; they are a sort of magic wand and should be used sparingly by anybody who wants to see things clearly.

A revolution only lasts fifteen years, a period which coincides with the effectiveness of a generation.

Abasement, degradation is simply the manner of life of the man who has refused to be what it is his duty to be.

An 'unemployed' existence is a worse negation of life than death itself.

An idea is a putting truth in check-mate.

Excellence means when a man or woman asks of himself more than others do.

Being an artist means ceasing to take seriously that very serious person we are when we are not an artist.

Love is that splendid triggering of human vitality the supreme activity which nature affords anyone for going out of himself toward someone else.

Effort is only effort when it begins to hurt.