I definitely know that love is the most powerful thing of all.

Don't count your owls before they are delivered.

She picked up the book and then walked back past him into the tent, but as she did so, she brushed the top of his head lightly with her hand. He closed his eyes at her touch, and hated himself for wishing that what she said was true: that Dumbledore had really cared.

Gilderoy Lockhart is also a lot like someone I once knew, but I don't think I'd better elaborate!

I know how to use a fellytone now.

Years ago someone wrote [about me]: 'She characterizes Molly Weasley as a mother who is only at home looking after the children.' I was deeply offended, because I until a year before that had also been such a mother who was at home all the time taking care of her child [...] What has lesser status and is more difficult than raising a child? And what is more important?

I don't believe in magic.