Resentment is like taking poison and hoping the other person dies.
— St Augustine
I watched you walk down that dirt road to freedom.” I said, “Now, when you were walking down there, and you realized how long you had been in their prison, didn’t you hate them then? Didn’t you feel some hatred?” He said, “Yes, I did a little bit.” He said, “I felt that.” And he said, “Frankly, I was kind of afraid, too, because I hadn’t been free in so long.”

But he said, “As I felt the anger rising up, I thought to myself, ‘They have already had you for 27 years. And if you keep hating them, they’ll have you again.’ And I said, ‘I want to be free’. And so I let it go. I let it go.
— Nelson Mandela talking to Bill Clinton
If only it were all so simple! If only there were evil people somewhere insidiously committing evil deeds, and it were necessary only to separate them from the rest of us and destroy them. But the line dividing good and evil cuts through the heart of every human being. And who is willing to destroy a piece of his own heart?
— Aleksandr Solzhenitsyn, The Gulag Archipelago
It is very tempting to take the side of the perpetrator. All that the perpetrator asks is that the bystander do nothing. He appeals to the universal desire to see, hear and speak no evil. The victim, on the contrary, asks the bystander to share the burden of pain. The victim demands action, engagement and remembering.
— Judith Herman