The mind has transformed the world, and the world is repaying it with interest. It has led man where he had no idea how to go.

Poetry is to prose as dancing is to walking.

Order always weighs on the individual. Disorder makes him wish for the police or for death. These are two extreme circumstances in which human nature is not at ease.

Science is a collection of successful recipes.

Great things are accomplished by those who do not feel the impotence of man. This is a precious gift.

Follow the path of your aroused thought, and you will soon meet this infernal inscription: There is nothing so beautiful as that which does not exist.

To write regular verses destroys an infinite number of fine possibilities, but at the same time it suggests a multitude of distant and totally unexpected thoughts.