hate does not work, it warps

There's another reason why you should love your enemies, and that is because hate distorts the personality of the hater. We usually think of what hate does for the individual hated or the individuals hated or the groups hated. But it is even more tragic, it is even more ruinous and injurious to the individual who hates. You just begin hating somebody, and you will begin to do irrational things. You can't see straight when you hate. You can't walk straight when you hate. You can't stand upright. Your vision is distorted. There is nothing more tragic than to see an individual whose heart is filled with hate. He comes to the point that he becomes a pathological case. For the person who hates, you can stand up and see a person and that person can be beautiful, and you will call them ugly. For the person who hates, the beautiful becomes ugly and the ugly becomes beautiful. For the person who hates, the good becomes bad and that bad becomes good. For the person who hates, the true becomes false and the false becomes true. That's what hate does. You can't see right. The symbol of objectivity is lost. Hate destroys the very structure of the personality of the hater.

- Dr. Martin Luther King, Jr., sermon at Dexter Avenue Baptist Church, November 17, 1957