Although you may spend your life killing, You will not exhaust all your foes. But if you quell your own anger, your real enemy will be slain. – Nagarjuna

Anger may be kindled in the noblest breasts: but in these slow droppings of an unforgiving temper never takes the shape of consistency of enduring hatred. – M. Kathleen Casey

The ignorant mind, with its infinite afflictions, passions, and evils, is rooted in the three poisons. Greed, anger, and delusion. – Bodhidharma