The Doctor: His life force is opening a portal.
Me/Ashildr: To my new life.
The Doctor: Or to Hell.

Clara: You're always talking about what you can and can't do, but you never tell me the rules.
The Doctor: We're time travelers. We tread softly. It's okay to make ripples, but not tidal waves.

Go. Now. Go find Vikings on other planets. The universe is full of testosterone. Trust me, it's unbearable.

Clara

Winning is all about looking happier than the other guy.

The Doctor

A good death is the best anyone can hope for, unless you happen to be immortal.

The Doctor

I looked them up in my 2000 year diary. They are called The Mire. They are one of the deadliest warrior races in the entire galaxy, but they're practical. They get what they want and then they go.

The Doctor

Ashildr: You think they're all idiots, don't you?
The Doctor: What, you mean the rest of the universe? Basically, yes I do.
Ashildr: But they're kind and brave and strong. And I love them.
The Doctor: Good, but that won't save you.

What is a God but the cattle’s name for farmer? What is heaven but the gilded door of the abattoir?

Odin

You robbed those people of their deaths. Made them nothing more than a message in a bottle. You violated something more important than time. You bent the rules of life and death. So I am putting things straight. Here. Now. This is where your story ends.

The Doctor

Doctor, such an honor. I've always been a huge admirer. This is really a delight. Finally, someone worth talking to.

The Doctor

The Doctor: Listen to me, we all have to face death eventually, be it ours or someone else's.
Clara: I'm not ready yet. Don't want to think about that, not yet.
The Doctor: I can't change what's already happened. There are rules.
Clara: So break them.

The Doctor: What are you doing here?
Prentis: Ah yes, of course. This is the Fisher King. He and his armies invaded Tivoli and enslaved us for 10 glorious years.

Doctor Who Quotes

Once, long ago, a fisherman caught a magic haddock. The haddock offered him three wishes in return for its life. The fisherman said, “I’d like for my son to come home from the war. And a hundred pieces of gold.” The problem is, the magic haddock, like robots, don’t think like people. The fisherman’s son came home from the war, in a coffin. And the king sent a hundred gold pieces in recognition of his heroic death. The fisherman had one wish left. What do you think he wished for? Some people say he should have wished for an infinite series of wishes, but if your city proves anything, it is that granting all your wishes is not a good idea. [...] In fact, the fisherman wished he hadn’t wished the first two wishes.

The Doctor

Hunger looks very much like evil from the other end of the cutlery. Do you think your bacon sandwich loves you back?

The Doctor