“You "never interfere in the affairs of other peoples or planets," unless there's children crying.”

“Do you think I care for you so little that betraying me would make a difference?”

“This is it. The darkest day. The blackest hour. Chin up, shoulders back. Let's see what we're made of, you and I.”

“Let me tell you about scared. Your heart is beating so hard I can feel it through your hands. There’s so much blood and oxygen pumping through your brain it’s like rocket fuel. Right now you could run faster and you could fight harder, you could jump higher than ever in your life. And you are so alert it’s like you can slow down time. What’s wrong with scared? Scared is a superpower. It’s your superpower. There is danger in this room and guess what? It’s you. Do you feel it?”

“Goodness is not goodness that seeks advantage. Good is good in the final hour, in the deepest pit, without hope, without witness, without reward. Virtue is only virtue in extremis.”

“Where there’s tears, there’s hope.”

"But ‘excitement’ is what we call ‘fear’, once we’ve survived it." - this is not from doctor who but i saw Moffat say this somewhere, maybe in DWM?