Davos Seaworth: Shield that guards the realms of men. That's what you swore to be. Now I'm not a learned man, the best way of help the most people might not be sitting in a frozen castle at the edge of the world. It just might mean wading in the muck, getting your boots dirty and doing what needs to be done.

Jon Snow: And what needs to be done?

Davos Seaworth: As long as the Boltons rule the North, the North will suffer.