People like that don't need a reason apart from "because I can". They have a nightmare and try to make it happen.
Terry PratchettThere are hardly any excesses of the most crazed psychopath that cannot easily be duplicated by a normal kindly family man who just comes in to work every day and has a job to do.
Terry PratchettThere was this about vampires : they could never look scruffy. Instead, they were... what was the word... deshabille. It meant untidy, but with bags and bags of style.
Terry PratchettIt's never a good idea to ask a man on a tight-rope how he keeps his balance: a) he would probably fall off and b) he probably doesn't know what the muscles are called in any case.
Terry Pratchett