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“No. This is right. I feel it. I am the Catalyst, and I came to change all things. Prophets become warriors, dragons hunt as wolves.”
― Robin Hobb

“I think I could stand anything, any suffering, only to be able to say and to repeat to myself every moment, 'I exist.' In thousands of agonies -- I exist. I'm tormented on the rack -- but I exist! Though I sit alone in a pillar -- I exist! I see the sun, and if I don't see the sun, I know it's there. And there's a whole life in that, in knowing that the sun is there.”
― Fyodor Dostoyevsky, The Brothers Karamazov

“Innocent?” He was incensed at her suggestion he was somehow responsible for this mess. “I’ve done nothing wrong, I intend nothing wrong. I am innocent!”
“Half the evil in this world occurs while decent people stand by and do nothing wrong. It’s not enough to refrain from evil, Trell. People have to attempt to do right, even if they believe they cannot succeed.”
“Even when it’s stupid to try?” he asked with savage sarcasm.
“Especially then,” she replied sweetly. “That’s how it’s done, Trell. You break your heart against this stony world. You fling yourself at it, on the side of good, and you do not ask the cost. That’s how you do it.”
― Robin Hobb, The Mad Ship

“If I were to be made a knight," said the Wart, staring dreamily into the fire, "I should insist on doing my vigil by myself, as Hob does with his hawks, and I should pray to God to let me encounter all the evil in the world in my own person, so that if I conquered there would be none left, and, if I were defeated, I would be the one to suffer for it."

"That would be extremely presumptuous of you," said Merlyn, "and you would be conquered, and you would suffer for it."

"I shouldn't mind."

"Wouldn't you? Wait till it happens and see."

"Why do people not think, when they are grown up, as I do when I am young?"

"Oh dear," said Merlyn. '"You are making me feel confused. Suppose you wait till you are grown up and know the reason?"

"I don't think that is an answer at all," replied the Wart, justly.

Merlyn wrung his hands.

"Well, anyway," he said, "suppose they did not let you stand against all the evil in the world?"

"I could ask," said the Wart.

"You could ask," repeated Merlyn.

He thrust the end of his beard into his mouth, stared tragically into the fire, and began to munch it fiercely.”
― T.H. White, The Once and Future King