With another shock of excitement, Harry saw Sirius give James the thumbs-up. Sirius was lounging in his chair at his ease, tilting it back on two legs. He was very good-looking, his dark hair fell into his eyes with a sort of casual elegance neither James's nor Harry's could ever have achieved, and a girl sitting behind him was eyeing him hopefully, though he didn't seem to have noticed.

Don't count your owls before they are delivered.

You're a wizard, Harry.

Perfection is not necessary to make a real and lasting difference to other people's lives.

And he knew that at that moment, they understood each other perfectly, and when he told her what he was going to do now, she would not say ‘be careful’ or ‘don’t do it’, but she would accept his decision because she would not have expected anything less of him.

You're the one who is weak. You will never know love or friendship. And I feel sorry for you.

Don't be sorry, my dear sir, for nothing could upset me today! Rejoice, for You-Know-Who is gone at last! Even muggles like yourself should be celebrating this happy, happy day.