Anger is the key to any evil.

Anger,
The spring of all life's horror.

- Medea

Evil resides in the very gaze which perceives Evil all around itself.

Ignorance, the root and stem of every evil.

Anger is the punishment we give ourselves for someone else's mistake.

Anger is loaded with information and energy.

He was insane with anger. Or is all insanity anger?

Anger has been ready to be angry.

Evil comes from unchecked power.

Evil draws its power from indecision and concern for what other people think.

Evil is the chronic malady of the universe, and checked in one place, breaks forth in another.

Anger is the most impotent of passions. It effects nothing it goes about, and hurts the one who is possessed by it more than the one against whom it is directed.

Anger prevents love and isolates the one who is angry. It is an attempt, often successful, to push away what is most longed for — companionship and understanding. It is a denial of the humanness of others, as well as a denial of your own humanness. Anger is the agony of believing that you are not capable of being understood, and that you are not worthy of being understood. It is a wall that separates you from others as effectively as if it were concrete, thick, and very high. There is no way through it, under it, or over it.

Anger is a brief madness.