Only God and some few rare geniuses can keep forging ahead into novelty.

You can be sure that a painter reveals himself in his work as much as and more than a writer does in his.

The following general definition of an animal: a system of different organic molecules that have combined with one another, under the impulsion of a sensation similar to an obtuse and muffled sense of touch given to them by the creator of matter as a whole, until each one of them has found the most suitable position for its shape and comfort.

Instinct guides the animal better than the man. In the animal it is pure, in man it is led astray by his reason and intelligence.

A thing is not proved because no one has ever questioned it... Skepticism is the first step toward truth.

Time, matter, space - all, it may be, are no more than a point.

Only passions, and great passions, can raise the soul to great things. Without them there is no sublimity, either in morals or in creativity. Art returns to infancy, and virtue becomes small-minded.