The thoughts written on the walls of madhouses by their inmates might be worth publicizing.

Georg Christoph Lichtenberg

Welcome to my nightmare. I think you're going to like it. There'll be some more when you come down.

Alice Cooper

Insanity in individuals is something rare - but in groups, parties, nations and epochs, it is the rule.

Friedrich Nietzsche

Insanity is often the logic of an accurate mind overtaxed.

Oliver Wendell Holmes

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

Oscar Levant

Insanity: doing the same thing over and over again and expecting different results.

Albert Einstein

Could anything be more indicative of a slight but general insanity than the aspect of the crowd on the streets of Chicago?

Charles Horton Cooley

We are very, very pleased the jury was able to see through this insanity defense, ... It was a stack of excuses.

Kathy Roberts

Insanity - It's difficult to comprehend how insane some people can be. Especially when you're insane.

Larry Kersten

I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me.

Hunter S. Thompson

The very definition of insanity is to keep doing the same thing over and over again, expecting different results.

Philip Mangano

I'm in this for the relationships. Not for the super-exciting drama, ER-type insanity.

Kristen Helvig

Love, n - A temporary insanity curable by marriage.

Ambrose Bierce

Insanity destroys reason, but not wit.

Nathaniel Emmons

What happens when you're healed and the insanity goes away and you realize the things you've done.

Jeff Casazza

I feel like Cal Ripken or something, ... This insanity is all self-imposed.

Andy Borowitz

The distance between insanity and genius is measured only by success.

Ian Fleming

Insanity is the only sane reaction to an insane society.

Thomas S. Szasz

There is no insanity so devastating in man's life as utter sanity.

William Allen White

I don't think there has been a jury verdict for insanity in my 35 years.

Wilbur Smith