... you could claim that anything's real if the only basis for believing in it is that nobody's proved it doesn't exist!

Like the fact that the person Sirius cared for the most about in the world was you," said Dumbledore quietly.

On the other hand, the Prince had proved a much more effective teacher than Snape so far.

It's just hard," Harry said finally, in a low voice, "to realize he won't write me again

No, it was honest," said Harry. "One of the only honest things you've said to me. You don't care whether I live or die, but you do care that I help you convince everyone you're winning the war against Voldemort.

Gringotts was the safest place in the world for something you wanted to hide — except perhaps Hogwarts.

Oh, don’t lie, Harry,” she said impatiently. “Ron and Ginny say you’ve been hiding from everyone since you got back from St. Mungo’s.” “They do, do they?” said Harry, glaring at Ron and Ginny. Ron looked down at his feet but Ginny seemed quite unabashed. “Well, you have!” she said. “And you won’t look at any of us!” “It’s you lot who won’t look at me!” said Harry angrily. “Maybe you’re taking it in turns to look and keep missing each other,” suggested Hermione, the corners of her mouth twitching.