The philosophers talk to you about the dignity of man, and they tempt you to pride, or they talk to you about the misery of man, and they tempt you to despair.

Since we cannot know all that there is to be known about anything, we ought to know a little about everything.

Too much and too little wine. Give him none, he cannot find truth; give him too much, the same.

I bring you the gift of these four words: I believe in you.

Thought makes the whole dignity of man; therefore endeavor to think well, that is the only morality.

I can well conceive a man without hands, feet, head. But I cannot conceive man without thought; he would be a stone or a brute.

Everything that is incomprehensible does not, however, cease to exist.