“You get used to... what you want to get used to.”

“Because I know what it feels like to be used, valued only for what you can do... not who you are, not who you want to be.”

“You can't avoid caring for someone for fear that one day something bad will happen. You will only die alone and afraid.”

“Love is not foolish. Yes, fools may fall in love but it is not foolish. Love is powerful and sometimes it is the one thing that keeps us alive. Don't dismiss it because it is difficult, most things worth having usually are.”

“I don't really trust a sane person.”

“The Doctor: This is bad, I don't like this. [kicks console and yells in pain] Never use force, you just embarrass yourself. Unless you're cross, in which case... always use force! Amy: Shall I run and get the manual? The Doctor: I threw it in a supernova. Amy: You threw the manual in a supernova? Why? The Doctor: Because I disagreed with it! Now stop talking to me when I'm cross!”

“When I have a kid, I want to buy one of those strollers for twins. Then put the kid in and run around, looking frantic. When he gets older, I'd tell him he used to have a brother, but he didn't obey.”