A man needs a little madness, or else... he never dares cut the rope and be free.

I am interested in madness. I believe it is the biggest thing in the human race, and the most constant. How do you take away from a man his madness without also taking away his identity? Are we sure it is desirable for a man's spirit not to be at war with itself, or that it is better to be serene and ready to go to dinner than to be excited and unwilling to stop for a cup of coffee, even?

A man has to be a bit mad [...]. That's the best thing about him.

Men will always be mad, and those who think they can cure them are the maddest of all.

Men are so inevitably mad that not to be mad would be to give a mad twist to madness.

Men are so necessarily mad, that not to be mad would amount to another form of madness.

He may be mad, but there's method in his madness. There nearly always is method in madness. It's what drives men mad, being methodical.

To say a man does mad things because he is mad is merely unintelligent and stupid. A madman is as logical and reasoned in his action as a sane man — given his peculiar biased point of view. For example, if a man insists on going out and squatting about in nothing but a loin cloth his conduct seems eccentric in the extreme. But once you know that the man himself is firmly convinced that he is Mahatma Gandhi, then his conduct becomes perfectly reasonable and logical.

Madness is somewhere between chaos and having a dream.

All men are mad in some way or the other;

"Knowledge is what man is all about. People like you have tried to hold back progress since the beginning of time. But they failed, and you failed. Man needs to know."
"Maybe," Sanders said. "But is that the only thing man needs? I don't think so. I think he also needs mystery, and poetry, and romance. I think he needs a few unanswered questions, to make him brood and wonder."

All men are mad in some way or another, and inasmuch as you deal discreetly with your madmen, so deal with God's madmen too, the rest of the world.

The greatest madness a man can be guilty of in this life, is to let himself die outright, without being slain by any person whatever, or destroyed by any other weapon than the hands of melancholy

It is me. I am his madness. For years he's been looking for something to put his madness into. And he found me.