“I smell guilt. There is a stench of guilt upon the air.I see you all, whole and healthy, with your powers intact — such prompt appearances! — and I ask myself . . . why did this band of wizards never come to the aid of their master, to whom they swore eternal loyalty? And I answer myself, they must have believed me broken, they thought I was gone. They slipped back among my enemies, and they pleaded innocence, and ignorance, and bewitchment. . . . And then I ask myself, but how could they have believed I would not rise again? They, who knew the steps I took, long ago, to guard myself against mortal death? They, who had seen proofs of the immensity of my power in the times when I was mightier than any wizard living? And I answer myself, perhaps they believed a still greater power could exist, one that could vanquish even Lord Voldemort . . . perhaps they now pay allegiance to another. . .”
“Even if I could, I wouldn't. Scars can come in handy. I have one myself above my left knee that is a perfect map of the London Underground.”
“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.”
“Divination is turning out to be much more trouble than I could have foreseen, never having studied the subject myself.”
“Did you know— then?” asked Harry.“Did I know that I had just met the most dangerous Dark wizard of all time? No.”
“Professor Dumbledore. Can I ask you something?" "Obviously, you've just done so," Dumbledore smiled. "You may ask me one more thing, however." "What do you see when you look in the mirror?" "I? I see myself holding a pair of thick, woolen socks." Harry stared."One can never have enough socks," said Dumbledore. "Another Christmas has come and gone and I didn't get a single pair. People will insist on giving me books."It was only when he was back in bed that it struck Harry that Dumbledore might not have been quite truthful. But then, he thought, as he shoved Scabbers off his pillow, it had been quite a personal question.”
“Lily and James only made you Secret-Keeper because I suggested it,” Black hissed, so venomously that Pettigrew took a step backward. “I thought it was the perfect plan... a bluff... Voldemort would be sure to come after me, would never dream they’d use a weak, talentless thing like you... It must have been the finest moment of your miserable life, telling Voldemort you could hand him the Potters.”