Maymuun

“It's going to be all right, sir," Harry said over and over again, more worried by Dumbledore's silence than he had been by his weakened voice. "We're nearly there ... I can Apparate us both back ... don't worry ..."
"I am not worried, Harry," said Dumbledore, his voice a little stronger despite the freezing water. "I am with you.”
― J.K. Rowling, Harry Potter and the Half-Blood Prince

“It was, he thought, the difference between being dragged into the arena to face a battle to the death and walking into the arena with your head held high. Some people, perhaps, would say that there was little to choose between the two ways, but Dumbledore knew - and so do I, thought Harry, with a rush of fierce pride, and so did my parents - that there was all the difference in the world.”
― J.K. Rowling, Harry Potter and the Half-Blood Prince

“Dumbledore will only leave from Hogwarts when there are none loyal to him!”
― J.K. Rowling, Harry Potter and the Half-Blood Prince

“Do you remember me telling you we are practicing non-verbal spells, Potter?"
"Yes," said Harry stiffly.
"Yes, sir."
"There's no need to call me "sir" Professor."
The words had escaped him before he knew what he was saying.”
― J.K. Rowling, Harry Potter and the Half-Blood Prince