Arbiter: "You trade one villain for another" Buck: "Did she just call me old?" Emile: "I'm ready, how 'bout you!" Johnson: "Oh I know what the ladies like." Didact: "Time was your ally human, but now it has abandoned you." Master Chief: "You know me... When I make a promise." Gravemind: "I... I am a monument to all your sins." Cortana: "This is the way the world ends, with a friend of a friend." Locke: "You're not the only one here because of him."