To believe in a contradiction is to abdicate your belief in the existence of the world around you and the nature of the things in it, to instead embrace any random impulse that strikes your fancy—to imagine something is real simply because you wish it were. A thing is what it is, it is itself. There can be no contradictions. In reality, contradictions cannot exist. To believe in them you must abandon the most important thing you possess: your rational mind.
— Goodkind, Chainfire 546