“The difficult thing, the glorious thing, was to be who you really were, even if that person was cruel or dangerous, particularly if cruel and dangerous. There was courage in not distinguishing the animal you happened to be. On the other hand, you had to avoid pretending to be more of an animal than you were: take that path, start exaggerating or faking and you became just another Cubby, just as much of a liar, a hypocrite”
“Do you see, Harry? Do you see the flaw in my brilliant plan now? I had fallen into the trap I had foreseen, that I had told myself I could avoid, that I must avoid.”“I don’t —”“I cared about you too much,” said Dumbledore simply. “I cared more for your happiness than your knowing the truth, more for your peace of mind than my plan, more for your life than the lives that might be lost if the plan failed. In other words, I acted exactly as Voldemort expects we fools who love to act.“Is there a defense? I defy anyone who has watched you as I have — and I have watched you more closely than you can have imagined — not to want to save you more pain than you had already suffered. What did I care if numbers of nameless and faceless people and creatures were slaughtered in the vague future, if in the here and now you were alive, and well, and happy? I never dreamed that I would have such a person on my hands.”
“Choice was dangerous: you had to forgo all other possibilities when you chose.”
“Did you know— then?” asked Harry.“Did I know that I had just met the most dangerous Dark wizard of all time? No.”
“Is 'fat' really the worst thing a human being can be? Is 'fat' worse than 'vindictive', 'jealous', 'shallow', 'vain', 'boring' or 'cruel'? Not to me.”
“Ginny, listen...I can't be involved with you anymore. We've got to stop seeing each other. We can't be together.""It's for some stupid noble reason isn't it?""It's been like...like something out of someone else's life these last few weeks with you. But I can't...we can't...I've got to do things alone now. Voldemort uses people his enemies are close to. He's already used you as bait once, and that was just because you were my best friend's sister. Think how much danger you'll be in if we keep this up. He'll know, he'll find out. He'll try and get me through you.""What if I don't care?""I care. How do you think I'd feel if this was your funeral...and it was my fault...”
“I bet you’re not dangerous at all, are you? Are you, you great ugly brute?”