Turns out, far too much has been written about great men and not nearly enough about morons. Doesn't seem right.

Tyrion

I remember nothing, only Unsullied.

Grey Worm

Nothing makes the past a sweeter place to visit than the prospect of imminent death.

Aemon

Love is the death of duty.

Aemon

Remember what you are and what you are not.

Ramsay

For a little while, you're more than just you.

Jon Snow

I made a promise to defend the wall and I have to keep it. That's what men do.

Sam

Mance: One of our giants went into your tunnel and never came out again. Mag the Mighty.
Jon: He's dead. He killed my friend Grenn.
Mance: He was their king. Last of a bloodline that stretches back before the first men.
Jon: Grenn came from a farm.
Mance: Mac and Grenn.
Jon: Grenn and Mac.

I don't choose Tywin Lannister. I don't love Tywin Lannister. I love my brother. I love my lover.

Cersei

I'd skin you alive for wine.

The Hound

Stand down. I said my people have bled enough and I meant it.

Mance

Cersei: The man who murdered our father, he tore us apart. He's the enemy. I've been telling you for years, you've been defending him for years.
Jaime: This is exactly what they want.
Cersei: And now our father is dead, and that little monster is out there somewhere drawing breath. Did you set him free? Tyrion may be a monster, but at least he killed our father on purpose. You killed him by mistake, a stupidity.

Game of Thrones Quotes

That's what I do. I drink and I know things.

Tyrion

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.