DOCTOR: It's not magic. It's a language. It's a different form of physics.

RUBY: Yes. Like magic.

CHERRY: I've given up on that cuppa and opted for a life of abstinence.

DOCTOR: Never be cruel. Never be cowardly. Hate is always foolish. Love is always wise. Always try to be nice, but never fail to be kind.

DOCTOR: Without hope. Without witness. Without reward.

DOCTOR: Who I am is where I stand. Where I stand is where I fall.

BILL: So, the Time Lords, bit flexible on the whole man-woman thing, then, yeah?

DOCTOR: We're the most civilised civilisation in the universe. We're billions of years beyond your petty human obsession with gender and its associated stereotypes.

BILL: But you still call yourselves Time Lords?

DOCTOR: Yeah. Shut up.

DOCTOR: Human progress isn't measured by industry, it's measured by the value you place on a life. An unimportant life. A life without privilege. The boy who died on the river, that boy's value is your value. That's what defines an age. That's what defines a species.

DOCTOR: Nothing’s sad until it’s over, and then everything is.

DOCTOR: I can't! Why is it always me? Why is it never anybody else's turn? Can't I just lose? Just this once?

DOCTOR: Do you know what thinking is? It’s just a fancy word for changing your mind.

DOCTOR: Sometimes the only choices you have are bad ones. But you still have to choose.

DOCTOR: I always rip out the last page of a book. Then it doesn't have to end. I hate endings.

DOCTOR: What the hell are you doing!?

AMY: Changing the future. It's called marriage.

DOCTOR: Rule one. The Doctor lies.

AMY: You want to be forgiven.

DOCTOR: Don't we all?

DOCTOR: Everything’s got to end sometime. Otherwise, nothing would ever get started.

DOCTOR: We’re all stories, in the end. Just make it a good one, eh?

DOCTOR: The way I see it, every life is a pile of good things and bad things. The good things don’t always soften the bad things, but vice versa, the bad things don’t always spoil the good things or make them unimportant.

DOCTOR: Ah, good. Scared keeps you fast. Anyone in this room who isn't scared is a moron.

DOCTOR: You know when grown-ups tell you everything's going to be fine and you think they're probably lying to make you feel better?

AMELIA: Yes.

DOCTOR: Everything's going to be fine.

DOCTOR: Some people live more in 20 years than others do in 80. It’s not the time that matters, it’s the person.

DOCTOR: I’m old enough to know that a longer life isn’t always a better one. In the end, you just get tired; tired of the struggle, tired of losing everyone that matters to you, tired of watching everything you love turn to dust. If you live long enough, Lazarus, the only certainty left is that you’ll end up alone.