“But his soul was mad. Being alone in the wilderness, it had looked within itself and, by heavens I tell you, it had gone mad.”

“The Mad Hatter: Have I gone mad?Alice Kingsley: I'm afraid so. You're entirely bonkers. But I'll tell you a secret. All the best people are.”

“I wondered if perhaps I'd gone mad. I had known this man less than twenty-four hours and already I wanted to raise his children.”

“..The argument he was conducting with his neighbor as to whether the English magician had gone mad because he was a magician, or because he was English.”

“It is a proven fact that everyone on this earth has some bit of madness within their soul. I am no exception and neither are you.”

“TRUE! – nervous – very, very dreadfully nervous I had been and am; but why will you say that I am mad? The disease had sharpened my senses – not destroyed – not dulled them. Above all was the sense of hearing acute. I heard all things in the heaven and in the earth. I heard many things in hell. How, then, am I mad? Hearken! and observe how healthily – how calmly I can tell you the whole story.”