Deliberately causing mayhem in Snape's Potions class was about as safe as poking a sleeping dragon in the eye.

What's life without a little risk?

It is not our abilities that show what we truly are. It is our choices.

We've all got both light and dark inside us. What matters is the part we choose to act on. That's who we really are.

Happiness can be found, even in the darkest of times, if one only remembers to turn on the light.

It is our choices... that show what we truly are, far more than our abilities.

We do not need magic to transform our world. We carry all of the power we need inside ourselves already.

The world is full of wonderful things you haven't seen yet. Don't ever give up on the chance of seeing them.

There is an expiry date on blaming your parents for steering you in the wrong direction; the moment you are old enough to take the wheel, responsibility lies with you.

Gryffindor, where dwell the brave at heart!

Twilight fell: The sky turned to a light, dusky purple littered with tiny silver stars.

Unhappy people can be very dangerous, don't forget that.

Believe. No pessimist ever discovered the secrets of the stars, or sailed to an uncharted island, or opened a new heaven to the human spirit.

Love is disgusting when you no longer possess yourself.

I dreaded an invasion of ghosts or, less likely, an invasion of the police.

Hee that blowes in the dust fills his eyes with it.

If you believe in yourself and feel confident in yourself, you can do anything. I really believe that.

I'll take anyway to get into the Hall of Fame. If they want a batboy, I'll go in as a batboy.

I can do whatever it takes to win.

When I get on the dance floor, my purpose in being on the dance floor is not to end up at another spot when the music stops. The purpose of the dance is to enjoy every step along the way.

Unless we redesign our civilization in numerous ways, all of the science in the world won't save us.