Obviously both good and evil exist, and equally obviously there are few people who are utterly one or the other.
Although there are a few that come close, and I've had the uncomfortable experience of interviewing one who was pretty far over on the "evil" quadrant. I won't reveal his name, but he was in prison, convicted of some particularly heinous crimes of which he was inordinately proud, and after talking to him, and looking into the cold abyss of his eyes, I was very thankful for the guards within close call.
