Varys: Littlefinger is one of the most dangerous men in Westeros. If Robb Stark falls, Sansa Stark is the key to the North.

Olenna Tyrell: And if Littlefinger marries her, he'll have the key in his pocket.

Varys: Which seems such a shame. Why should a man with such a low reputation steal away such a lovely bride?

Olenna Tyrell: You must despise him. You're working so hard to undermine him.

Varys: Actually, I rather enjoy him. But he would see this country burn if he could be king of the ashes.