“The Left doesn't hate evil, it hates those who hate evil. On the Left there is a subliminal, subconscious deep understanding that they are inadequate to the job of fighting evil. That's why they get so passionate about trivia.”

Rules 2 Rule

Source: Fall of Kings

Pan's Labyrinth DVD director's commentary

1950s, Loving Your Enemies (Christmas 1957)
Context: Another reason why we must love our enemies is that hate scars the soul and distorts the personality. Mindful that hate is an evil and dangerous force, we too often think of what it does to the person hated. This is understandable, for hate bring irreparable damage to its victims. We have seen its ugly consequences in the ignominious deaths brought to six million Jews by a hate-obsessed madman named Hitler, in the unspeakable violence inflicted upon Negroes by blood-thirsty mobs, in the dark horrors of war, and in the terrible indignities and injustices perpetrated against millions of God's children by unconscionable oppressors.
But there is another side which we must never overlook. Hate is just as injurious to the person who hates. Like an unchecked cancer, hate corrodes the personality and eats away its vital unity. Hate destroys a man's sense of values and his objectivity. It causes him to describe the beautiful as ugly and the ugly as beautiful, and to confuse the true with the false and the false with the true.

In Lugalbanda in the Mountain Cave, Ur III Period (21st century BCE). http://etcsl.orinst.ox.ac.uk/cgi-bin/etcsl.cgi?text=t.1.8.2.1#

Plato, Phaedo

Speech at the Mount Olivet Baptist Church in Harlem, New York (8 September 2000), quoted in Michael Radu, "State of Disaster", National Review, 27 May 2002
2000s, 2000-2004

Treatise on Jealousy and Envy ch. ix