Caymus Ruffner

“Amy: So. Are you proposing to someone? The Doctor: Sorry? Amy: I found this in your pocket. The Doctor: No. No no. That's a memory. Friend of mine. Someone I lost. Would you... mind. Amy: It's weird. I feel... I dunno, something. The Doctor: People fall out of the world sometimes but they always leave traces. Little things we can't quite account for. Faces in photographs. Luggage. Half-eaten meals. Rings. Nothing is ever forgotten, not completely. And if something can be remembered it can come back.”
― Steven Moffat

“We all change, when you think about it. We’re all different people all through our lives. And that’s OK, that’s good, you gotta keep moving, so long as you remember all the people that you used to be.”
― Steven Moffat

“The Doctor: You betrayed me. You betrayed my trust, you betrayed our friendship, you betrayed everything I ever stood for. You let me down!
Clara: Then why are you helping me?
The Doctor: Why? Do you think I care for you so little that betraying me would make a difference?”
― Steven Moffat

“Because every time you see them happy you remember how sad they're going to be. And it breaks your heart. Because what's the point in them being happy now if they're going to be sad later. The answer is, of course, because they a re going to be sad later.”
― Steven Moffat, Doctor Who: The Shooting Scripts