“PricklyWhen I'm feelingporcupine-y,I get nasty,I get whiny.Stay away orI might stick you.My sharp words arequills to prick you.”

“The Doctor: I just don’t like nastiness, and people getting away with it.Churchwell: That sounds a rather, if you forgive me, innocent view.The Doctor: That’s as may be, but I’m sticking to it.”

“Above all, staring at my old bedroom ceiling, I feel safe. Cocooned from the world; wrapped up in cotton wool. No one can get me here. No one even knows I'm here. I won't get any nasty letters and I won't get any nasty phone calls and I won't get any nasty visitors. It's like a sanctuary. I feel as if I'm fifteen again, with nothing to worry about but my Homework. (And I haven't even got any of that.)”

“There are some people you like immediately, some whom you think you might learn to like in the fullness of time, and some that you simply want to push away from you with a sharp stick.”

“I'm sick of this. Call me what you like, say I'm without honor, I don't care. I'm not getting on any more horses to whack you people with a stick.”

“Is your nasty natural?" I heard myself saying. "Or did you get it implanted?”