Yaz: You can be honest with me. Are we going to die?
The Doctor: One day, yes. Comes to us all.

The Doctor: Does it even have a name?
Epzo: Only a symbol. Or a warning. Closest word is... 'Desolation'

There's this moment when you're sure you're gonna die and then you're born. It's terrifying.

The Doctor

Half an hour ago, I was a white-haired Scotsman

The Doctor

I carry them with me. What they would've thought and said and done. Made them a part of who I am. So even though they're gone from the world, they're never gone from me.

The Doctor

I'm just a traveler.

The Doctor

I am The Doctor, sorting out fair play throughout the universe.

The Doctor

Grace: Is it wrong to be enjoying this?
Graham: YES

If there's one thing I'm certain of, when people need help, I never refuse.

The Doctor

This is exciting. No, not exciting. What do I mean? Worrying.

The Doctor

Don't be scared. All of this is new to you and new can be scary.

The Doctor

Graham: There's no such thing as aliens. Anyway, even if there was, they wouldn't be on a train in Sheffield.
The Doctor: Why not? I'm an alien and I'm here.