“You’ve got to give the door something?’
‘Yes,’ said Dumbledore. ‘Blood, if I am not much mistaken.’
‘Blood?’
‘I said it was crude,’ said Dumbledore, who sounded disdainful, even disappointed, as though Voldemort had fallen short of the standards Dumbledore expected.”
“I say to you all, once again - in the light of Lord Voldemort's return, we are only as strong as we are united, as weak as we are divided.”
Source: Harry Potter and the Goblet of Fire
“He changed, Harry, he changed! It's as simple as that! Maybe he did believe these things when he was seventeen, but the whole rest of his life was devoted to fighting the Dark Arts... Harry, I'm sorry, but I think the real reason you're so angry is that Dumbledore never told you any of this himself.”
Source: Harry Potter and the Deathly Hallows
“Dumbledore's plan works well in giving Harry protection from the external danger of Voldemort. The plan also gives him an ordinary life. This ordinary life is a protection from the spiritual danger of pride, while being an aid to humility.
Voldemort does not escape this danger. He has contempt for anything that makes him ordinary, such as his name Tom. He wants to be "different, separate, notorious." Harry, on the other hand, never tries to avoid his name, although the Dursleys think it a "nasty common name." He interiorises the value of being ordinary. ... singularity [is] the vice that is the opposite of accepting one's ordinariness.”
Source: Baptizing Harry Potter: A Christian Reading of J.K. Rowling
“Voldemort himself created his worst enemy, just as tyrants everywhere do! Have you any idea how much tyrants fear the people who they oppress?”
Source: Harry Potter and the Half-Blood Prince
“I think it is time that I took a greater hand in your education.”
Source: Harry Potter and the Half-Blood Prince
“It does not do to dwell on dreams and forget to live, remember that. Now, why don't you put that admirable cloak back on and get off to bed.”
“You don’t think anything that Skeeter cow — sorry, Professor,' he added quickly, looking at Dumbledore. 'I have gone temporarily deaf and haven’t any idea what you said, Harry,' said Dumbledore, twiddling his thumbs and staring at the ceiling.”
Source: Harry Potter and the Goblet of Fire
“If the fear of the name increases, the fear too increases.”
Source: Harry potter and the sorcerer’s stone
“Snape was Dumbledore's, Dumbledore's from the moment you started hunting down my mother. And you never realised it, because of the thing you can't understand.”
Source: Harry Potter and the Deathly Hallows