Ever in the dullest existence there is a sheen either of Inspiration or of Madness

When you live in the shadow of insanity, the appearance of another mind that thinks and talks as yours does is something close to a blessed event.

Then were the seeds of madness planted.

"Inside every sane person there's a madman struggling to get out," said the shopkeeper. "That's what I've always thought. No one goes mad quicker than a totally sane person."

All living things contain a measure of madness that moves them in strange, sometimes inexplicable ways.

Of course, in an age of madness, to expect to be untouched by madness is a form of madness. But the pursuit of sanity can be a form of madness, too.

Between genius and madness there is often not the thickness of a hair.

Let us consider that we are all partially insane. It will explain us to each other; it will unriddle many riddles; it will make clear and simple many things which are involved in haunting and harassing difficulties and obscurities now.

There was never a great genius without a touch of madness.

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

humanity could share a common insanity and be immersed in a common illusion while living in a common chaos.

Madness is somewhere between chaos and having a dream.

madness, in a higher sense, is the beginning of all wisdom

To be sane in a world of madman is in itself madness.