"Banish Evil from the world? Nonsense! Encourage it, foster it, sponsor it. The world owes Evil a debt beyond imagination. Think! Without greed ambition falters. Without vanity art becomes idle musing. Without cruelty benevolence lapses to passivity. Superstition has shamed man into self-reliance and, without stupidity, where would be the savor of superior understanding?"
January 1, 1970
https://en.wikiquote.org/wiki/Jack_Vance