Art is long, life is short; judgement difficult, opportunity transient.

The best slave is the one who thinks he is free.

Talents are nurtured best in solitude, But character on life's tempestuous seas!

What dazzles, for the moment spends its spirit; Whats genuine, shall posterity inherit.

All theory, dear friend, is gray, but the golden tree of life springs ever green.

The best way to understand a painting is by drawing it.

How can one learn to know oneself? Never by introspection, rather by action.