He doesn't just talk about paying people back, he does it.

Davos

You lost a hand, not a stomach.

Tyrion

Faith is the way, father.

Margaery

Bran, wake up!

Meera

Perhaps we should take shelter.

Tyrion

Bran: Meera, they found us.
Meera: I’m so sorry.

Untie me. If I die, what's the point?

Tyrion

War was easier than daughters.

Ned

A sword swallower through and through.

Olenna

Lord Varys: Lord Stark.
Ned: Lord Varius.
Lord Varys: I was grievously sorry to hear of your troubles on the Kingsroad. We are all praying for Prince Joffrey's full recovery.
Ned: Shame you didn't say a prayer for the butcher's son.

Jon: I'm Lord Commander of the Night's Watch. My place is here.
Stannis: I'm giving you a chance to avenge your family. To take back the castle where you grew up. To rule the North.
Jon: I wish I could fight beside you. Believe me I do, but I swore a sacred vow the Gods would. I pledged my life to the Night's Watch.
Stannis: You're as stubborn as your father, and as honorable.
Jon: I can imagine no higher praise.
Stannis: I didn't mean it as praise. Honor got your father killed, but if your mind's made up I won't try and dissuade you.

Cersei: You still mourn for Joffrey?
Margaery: He was my husband, my king.
Cersei: He would have been your nightmare.

Game of Thrones Quotes

Tyrion: Let me give you some advice bastard. Never forget what you are. The rest of the world will not. Wear it like armor, and it can never be used to hurt you.
Jon: What the hell do you know about being a bastard?
Tyrion: All dwarfs are bastards in their father's eyes.

I will hurt you for this. A day will come when you think you are safe and happy, and your joy will turn to ashes in your mouth. And you will know the debt is paid.

Tyrion Lannister