Only one pair was still battling, apparently unaware of the new arrival. Harry saw Sirius duck Bellatrix's jet of red light: he was laughing at her. 'Come on, you can do better than that!' he yelled, his voice echoing around the cavernous room. The second jet of light hit him squarely in the chest. The laughter had not quite died from his face, but his eyes widened in shock.

A Horcrux is the complete opposite of a human being.

He might have been encased in a thick glass bubble, so separate did he feel from his three dining companions. It was a sensation with which he was only too familiar, that of walking in a giant sphere of worry, enclosed by it, watching his own terrors roll by, obscuring the outside world.

Promise me you’ll look after yourself … stay out of trouble …’ ‘I always do, Mrs Weasley,’ said Harry. ‘I like a quiet life, you know me.

Dementors caused a person to relive the worst moments of their life. What would spoiled, pampered, bullying Dudley have been forced to hear?

I sat and thought for four (delayed train) hours, and all the details bubbled up in my brain, and this scrawny, black-haired, bespectacled boy who didn't know he was a wizard became more and more real to me.

Do you mean ter tell me," he growled at the Dursleys, "that this boy—this boy!—knows nothin' abou'—about ANYTHING?" Harry thought this was going a bit far. He had been to school, after all, and his marks weren't bad. I know some things," he said. "I can, you know, do math and stuff.