Alien: What are you doing?
The Doctor: What everyone does when the world is in danger -- calling the Doctor!

It’s like Super Mario, figuring out what’s going on. Deleting himself from the game, because he’s sick of dying.

The Doctor

The Veritas tells of an evil demon that wants to conquer the world. But to do it, he needs to learn about it, first. So he creates a shadow world. A world for him to practice conquering. Full of shadow people that think they are real.

The Doctor

Bill: How is blowing everyone up saving the world?!
CERN Scientist: Because… this isn’t the world!

Okay, Bill. Miss Potts. [removes his glasses] I’m the only person you’ve ever met or will ever meet who is officially licensed to kick the Doctor’s arse. I will happily do the same to you in the event that you do not align yourself with any instructions that I have issued which I personally judge to be in the best interest of your safety and survival. [puts his glasses back on] Okay, Bill?

Nardole

Bill: Are you trying to get rid of us?
The Doctor: Why?
Nardole: ‘Cause you’re sending us into the dark after a man with a gun.
The Doctor: Ah! Well, I thought of that.
Nardole: Thank you.
The Doctor: Nardole, you make sure you walk in front of Bill.
Nardole: Oh, right.

Particle physicists and priests. What could scare them both?

The Doctor

Only in darkness are we revealed. [...] Goodness is not goodness that seeks advantage. Good is good in the final hour, in the deepest pit, without hope, without witness, without reward. Virtue is only virtue in extremis. This is what *he* believes, and this is the reason above all I love him, my husband. My madman in a box. My Doctor.

Nardole [quoting River Song]

When I’m on a date, when a rare and special thing happens in my real life, do not, *do not*, under *any* circumstances, put the pope in my bedroom!

Bill

Penny: That was the pope! Bill, that was the *pope*!
Bill [resigned]: Yeah… I am about to have a *truly* awesome word with someone…

Memories are so much worse in the dark.

The Doctor

Doctor Who Season 10 Episode 7 Quotes

Only in darkness are we revealed. [...] Goodness is not goodness that seeks advantage. Good is good in the final hour, in the deepest pit, without hope, without witness, without reward. Virtue is only virtue in extremis. This is what *he* believes, and this is the reason above all I love him, my husband. My madman in a box. My Doctor.

Nardole [quoting River Song]

Penny: That was the pope! Bill, that was the *pope*!
Bill [resigned]: Yeah… I am about to have a *truly* awesome word with someone…