Oh! how near are genius and madness! Men imprison them and chain them, or raise statues to them.

Evil always turns up in this world through some genius or other.

Gaiety is a quality of ordinary men. Genius always presupposes some disorder in the machine.

I picture the vast realm of the sciences as an immense landscape scattered with patches of dark and light. The goal towards which we must work is either to extend the boundaries of the patches of light, or to increase their number. One of these tasks falls to the creative genius; the other requires a sort of sagacity combined with perfectionism.

There is a fine line between genius and insanity. I have erased this line.

One man's insanity is another man's genius; someday the world will recognize the genius in my insanity.