When one person suffers from a delusion it is called insanity; when many people suffer from a delusion it is called religion. (Robert Pirsig)

I think ‘Hail to the Chief’ has a nice ring to it. (John F. Kennedywhen asked what is his favorite song)

The only difference between me and a madman is that I’m not mad. (Salvador Dali)

Each problem that I solved became a rule which served afterwards to solve other problems. (Rene Descartes, Discours de la Methode)