Kayla

“The Doctor: Doctor Song, you've got that face on again.
River: What face?
The Doctor: The "He's hot when he's clever" face.
River: This is my normal face.
The Doctor: Yes it is.
River: Oh, shut up.
The Doctor: Not a chance.”
― Steven Moffat

“The Doctor: This is bad, I don't like this. [kicks console and yells in pain] Never use force, you just embarrass yourself. Unless you're cross, in which case... always use force!
Amy: Shall I run and get the manual?
The Doctor: I threw it in a supernova.
Amy: You threw the manual in a supernova? Why?
The Doctor: Because I disagreed with it! Now stop talking to me when I'm cross!”
― Steven Moffat

“Bow ties are cool.”
― Steven Moffat

“The Doctor: Don't blink. Don't even blink. Blink and you're dead. Don't turn your back. Don't look away. And don't blink.”
― Steven Moffat