The Doctor: I had a friend once. We ran together when I was little. And I thought we were the same. When we grew up, we weren't. And now she's trying to tear the world apart and I can't run fast enough to hold it together. The difference... is this. Pain is a gift. Without the capacity for pain, we can't feel the hurt we inflict.
Danny: Are you telling me, seriously, for real that you can?
The Doctor: Of course I can.
Danny: Then shame on you, Doctor.
The Doctor: Yes. Oh, yes.
The Doctor: I am not a good man! And I'm not a bad man. I am not a hero. I'm definitely not a president. And no, I'm not an officer. You know what I am? I... am... an idiot. With a box and a screwdriver, passing through, helping out, learning. I don't need an army, I never have. Because I've got them. (points at Clara and Cyber-Danny) Always them. Because love, it's not an emotion. Love is a promise. And he will never hurt her.
Danny: Attention! This is not a good day. This is Earth's darkest hour. And look at you miserable lot. We are the fallen. But today we shall rise. The army of the dead will save the land of the living. This is not the order of a general. Nor the whim of a lunatic...
Missy: Excuse me?
Danny: This is a promise. The promise of a soldier!
Clara: Why don't you like hugging, Doctor?
The Doctor: Never trust a hug. It's just a way to hide your face.
Clara: Doctor. Traveling with you made me feel really special. Thank you for that. Thank you for making me feel special.
The Doctor: Thank you for exactly the same.