1. This, too, shall pass.
2. Yes, we were.
3. I am what I am, and I'm not ashamed. Never be ashamed.
4. Never call anyone Master.
5. Take it or leave it.
6. You never have to put up with anyone who doesn't respect you.
7. Keep calm and conjure a Patronus charm.
9. The "F" word.
10. Don't make secrets.
11. Fight or die.
12. No regrets.
15. Who are me?
16. Don't knock it 'til you try it.
17. Absence makes the heart grow fonder.
18. If you can't say anything nice, don't say anything at all.
19. To each their own.
20. Don't call the kettle black or you're gonna get thrown in the fire.
This post currently under construction. Feel free to add your own in the comments below.