I enjoy cooperating, preferably in a jolly fashion.
More informatively, it's a quote from Solaire of Astora from the game Dark Souls. I love the game, and this is my favorite line from it (which isn't really saying much, I suppose, since there are relatively few spoken lines in the game). It's not just the line itself that I love, but the sincerity with which it was delivered. In a multiplayer community filled with invaders, I take pride in being a cooperative Warrior of Sunlight. Plus, the Lightning Spear spell you get from the covenant is awesome.