Of the four elements water is the second in weight and the second in respect of mobility. It is never at rest until it unites with the sea

Drawing is based upon perspective, which is nothing else than a thorough knowledge of the function of the eye.

Your brain is much better than you think; just use it!

Men of lofty genius when they are doing the least work are most active.

O sleepers! what a thing is slumber! Sleep resembles death. Ah, why then dost thou not work in such wise as that after death thou mayst retain a resemblance to perfect life, when, during life, thou art in sleep so like to the hapless dead?

The worst evil which can befall the artist is that his work should appear good in his own eyes.

People reveal themselves completely only when they are thrown out of the customary conditions of their life.

When Fortune comes, seize her in front with a sure hand, because behind she is bald.

The supreme misfortune is when theory outstrips performance.

A beautiful body perishes, but a work of art dies not.