Howard Hughes was able to afford the luxury of madness, like a man who not only thinks he is Napoleon, but hires an army to prove it.

A man who is 'of sound mind' is one who keeps the inner madman under lock and key.

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

When dealing with the insane, the best method is to pretend to be sane.

In the West, the insane are so many that they are put in an asylum, in China the insane are so unusual that we worship them.

The first step towards madness is to think oneself wise.

Madness is no madness when shared.

Some people never go crazy. What truly horrible lives they must live.

Each of us keeps, battened down inside himself, a sort of lunatic giant-impossible socially, but full-scale-and it's the knockings and batterings we sometimes hear in each other that keep our intercourse from utter banality.

If I am mad, then who on the face of the earth is sane? If you are sane, then there is no madman in the world.