ABSTRACT
You just said that I am insane. In that case my belief is not a delusion, but a correct idea. Therefore I have no delusion. Therefore I am not, after all, insane. It is only a delusion that I am insane, hence I have a delusion, hence I am insane, hence I am right, hence I am not insane. Isn’t psychiatry a magnificent science? (Frigyes Karinthy, cited by David, 1990, pp. 166–167)
