"The very spells you do under the Imperius alter your personality. Every Dark spell you do alters your personality. It's not a defence, Harry. It can't be. I would agree to something shorter than a life sentence, but you are still looking to decades," he said.
Albus shook his head. "It doesn't matter whether you see it or not. He came here having done nothing and you were ready to condemn it. Whether you or even the Wizengamot understands it not a legal test. Even if it were, your daughter killed three people. Think about their families. We need to give them justice as well."
He glared at Harry. "Peter has committed no crimes," he said. "None. Your dislike for him is irrelevant. Stop thinking like a child, and start thinking like the Head of the most important Law Enforcement Division. He doesn't need a chance."
Albus shrugged. "He is one of yours. He has access. He is not a child; he's of age. We've asked a lot more of much younger people. If he's not a boy when he needs to be trained, he can hardly be considered a boy when he's called upon to do a job. You would ask it of your son, wouldn't you? I think it's time you start thinking with your heart, Harry. It was my big problem with Alastor. You want to be his friends. You make decisions with your heart. You can't do that, not while being Head Auror. You have an institutional role and you can't ignore it."