Any idiot can face a crisis - it's day to day living that wears you out.

Reason and justice tell me there's more love for humanity in electricity and steam than in chastity and vegetarianism.

Three o'clock in the morning. The soft April night is looking at my windows and caressingly winking at me with its stars. I can't sleep, I am so happy.

Man has been endowed with reason, with the power to create, so that he can add to what he's been given.

A tree is beautiful, but what's more, it has a right to life; like water, the sun and the stars, it is essential. Life on earth is inconceivable without trees. Forests create climate, climate influences peoples' character, and so on and so forth. There can be neither civilization nor happiness if forests crash down under the axe, if the climate is harsh and severe, if people are also harsh and severe. ... What a terrible future!

Try to be original in your play and as clever as possible; but don't be afraid to show yourself foolish; we must have freedom of thinking, and only he is an emancipated thinker who is not afraid to write foolish things.

I don’t understand anything about the ballet; all I know is that during the intervals the ballerinas stink like horses.