Tyrion Lannister: All my life you’ve wanted me dead.

Tywin Lannister: Yes. But you refused to die. I respect that. Even admire it. You fight for what’s yours. I’d never let them execute you. Is that what you fear? I’ll never let Ilyn Payne take your head. You’re a Lannister. You’re my son.

From Game of Thrones – Season 4 Episode 10: ‘The Children’ (4×10)