I learned something when I was young and I've never forgotten it; Knowledge is power. It doesn't matter how quick you are, how strong your spells or how strong you are physically. All that matters is what (and who) you know and how you use that information.
I knew I'd be coming to Hogwarts. I've waited for years for this day. After all the Hogwarts Library is one of the largest collections of magical literature in the world. How could I pass that up?
The sorting hat considered me for Ravenclaw before deciding against it.
Well, green always was my favourite colour.