Power is Power - Game Of Thrones

Lord Baelish: When boys and girls live in the same home, awkward situations can arise. Sometimes, I've heard, even brothers and sisters develop certain affections. And when those affections become common knowledge, well that is an awkward situation indeed, especially in a prominent family. Prominent families often forget a simple truth I found.

Cersei Lannister: And which truth is that?

Lord Baelish: Knowledge is power.

Cersei Lannister: Seize him. Cut his throat. Stop! Oh, wait, I've changed my mind, let him go. Step back three paces. Turn around. Close your eyes. Power is power...