Every revolution was first a thought in one man's mind.
The dead sleep in their moonless night; my business is with the living.
Whatever you do, you need courage. Whatever course you decide upon, there is always someone to tell you that you are wrong.
What you are comes to you.
No man has a right perception of any truth, who has not been reacted on by it, so as to be ready to be its martyr.
Universities are of course hostile to geniuses.