Re: 7X12 Nightmare in Silver(Grading/Discussion)(SPOILERS)
In retrospect though that scene was a good hint about his reluctance to take similar methods, being sorry for who did it in the past. Also a nice bit of connection between him and the Doctor - I was surprised that at no point did Clara learn about the Doctor doing something extremely similar and is haunted by that past. It was all there in subtext of course, but never actually stated.
"If Romeo had just masturbated a couple of times a week he would have saved both those nice families a heap of trouble."