We all know, in fact, that the insane...... derive a great deal of comfort and consolation from their imagination, that they enjoy their madness sufficiently to endure the thought that its validity does not extend beyond themselves. And, indeed, hallucinations, illusions, etc., are not a source of trifling pleasure.... These people are honest to a fault, and their naiveté has no peer but my own. Christopher Columbus should have set out to discover America with a boatload of madmen. And note how this madness has taken shape, and endured.

Le Manifeste du Surréalisme (Manifesto of Surrealism; 1924)