“This is precisely why I loathed being a teacher! Young people are so infernally convinced that they are absolutely right about everything. Has it not occurred to you, my poor puffed-up poppinjay, that there might be an excellent reason why the Headmaster of Hogwarts is not confiding every tiny detail of his plans to you? Have you never paused, while feeling hard-done-by, to note that following Dumbledore's orders has never yet led you into harm? No. No, like all young people, you are quite sure that you alone feel and think, you alone recognise danger, you alone are the only one clever enough to realise what the Dark Lord may be planning.”
“You can try, but you seem cleverer than Fudge, so I'd have thought you'd have learned from his mistakes. He tried intervening at Hogwarts. You might have noticed he's not Minister anymore, but Dumbledore's still headmaster. I'd leave Dumbledore alone, if I were you.”
“Young people are so infernally convinced that they are absolutely right about everything.”
“Why do you need everyone married?" Christopher has said to him angrily, when Henry has asked about his son's life. "Why can't you just leave people alone?"He doesn't want people alone.”
“How can I know for sure if it's my son speaking and not you?""You never can, my lord. Just as no man can ever be sure that he alone is a thinking and feeling creature and everyone else a machine that only pretends to feel and think.”
“Bjarne Møller, my former boss, says people like me always choose the line of most resistance. It's in what he calls our 'accursed nature'. That's why we always end up on our own. I don't know. I like being alone. Perhaps I have grown to like my self-image of being a loner, too....I think you have to find something about yourself that you like in order to survive. Some people say being alone is unsociable and selfish. But you're independent and you don't drag others down with you, if that's the way you're heading. Many people are afraid of being alone. But it made me feel strong, free and invulnerable.”