Yara Greyjoy, saying goodbye to her brother right before grabbing a friendly woman at the bar:
"Now, since it's my last night on shore for a while, I'm going to go fuck the tits off this one."
Tormund Giantsbane, on the subject of loyalty:
"We're not clever like you Southerners. When we say we'll do something, we do it."
Olenna Tyrell, to Cersei after she makes a threat:
"You've lost, Cersei. It's the only joy I can find in all this misery."
Olenna Tyrell, again to Cersei, this time after she tries to make a truce:
"I wonder if you might be the most horrible person I've ever met."
Brother Ray, lecturing the Hound to be more zen:
"Violence is a disease. You don't cure it by spreading it to more people."