A good painter has two main objects to paint, man and the intention of his soul.
Wherever good fortune enters, envy lays siege to the place and attacks it; and when it departs, sorrow and repentance remain behind.
Your brain is much better than you think; just use it!
Avoid the precepts of those thinkers whose reasoning is not confirmed by experience.
Whoever in debate quotes authority uses not intellect, but memory.
He who never puts his trust in any man will never be deceived.