I am little concerned with beauty or perfection. I don't care for the great centuries. All I care about is life, struggle, intensity.

I believe that all is illusion and vanity outside the treasure of truths slowly accumulated, and which will never again be lost. I believe that the sum of these truths, always increasing, will at last confer on man incalculable power and peace, if not happiness. Yes, I believe in the final triumph of life.

If you shut up truth, and bury it underground, it will but grow.

Up to this day, there has been no proof of the existence of any intelligence other than the human.

I believe that the future of humanity is in the progress of reason through science. I believe that the pursuit of truth, through science, is the divine ideal which man should propose to himself.

If you ask me what I came into this life to do, I will tell you: I came to live out loud.

Selling beauty is something I can understand. Even selling false beauty seems perfectly natural; it's a sign of progress.

The fear of life, the fear of burdens and of duties, of annoyances and of catastrophes! The fear of life, which makes us, through dread of its sufferings, refuse its joys. Ah! I tell you, this cowardliness enrages me; I cannot forgive it. We must live - live a complete life - live all our life.

Keep well; that is the half of wisdom and of happiness.

If you ask me what I came into this life to do, I will tell you: I came to live out loud.

There are two men inside the artist, the poet and the craftsman. One is born a poet. One becomes a craftsman.

The fate of animals is of greater importance to me than the fear of appearing ridiculous; it is indissolubly connected with the fate of men.