Wicked thoughts and worthless efforts gradually set their mark on the face, especially the eyes.
Genius and madness have something in common: both live in a world that is different from that which exists for everyone else.
For our improvement we need a mirror.
A pessimist is an optimist in full possession of the facts.
Rudeness is better than any argument; it totally eclipses intellect.
Every state of welfare, every feeling of satisfaction, is negative in its character; that is to say, it consists in freedom from pain, which is the positive element of existence.