Yes, it has made me happier. Finishing them has made me happier. Before I wrote the Potter books, I'd never finished a novel. I came close to finishing two.

They don’t need walls and water to keep the prisoners in, not when they’re trapped inside their own heads, incapable of a single cheerful thought. Most go mad within weeks - Lupin

There you go, Harry!” Ron shouted over the noise. “You weren’t being thick after all — you were showing moral fiber!

Why are you worrying about YOU-KNOW-WHO, when you should be worrying about YOU-NO-POO? The constipation sensation that's gripping the nation!

Tessa was convinced that it was a lie, and also that everything she had done in her life, telling herself that it was for the best, had been no more than blind selfishness, generating confusion and mess all around. But who could bear to know which stars were already dead, she thought, blinking up at the night sky; could anybody stand to know they all were?

Ron's indignation on his behalf was worth about a hundred points to him.

Andrew hated to see her humiliated and pathetic like this; but he half hated her too for landing herself in it, when any idiot could have seen.