Oliver

“Men never do evil so completely and cheerfully as when they do it from religious conviction.”
― Blaise Pascal, Pensées

“Evil begins when you begin to treat people as things.”
― Terry Pratchett, I Shall Wear Midnight

“Animals don't behave like men,' he said. 'If they have to fight, they fight; and if they have to kill they kill. But they don't sit down and set their wits to work to devise ways of spoiling other creatures' lives and hurting them. They have dignity and animality.”
― Richard Adams, Watership Down

“If only it were all so simple! If only there were evil people somewhere insidiously committing evil deeds, and it were necessary only to separate them from the rest of us and destroy them. But the line dividing good and evil cuts through the heart of every human being. And who is willing to destroy a piece of his own heart?”
― Aleksandr Solzhenitsyn, The Gulag Archipelago 1918–1956