Arthur: It's a shame. He would've been a great knight.
Merlin: Maybe one day he still will.
Arthur: The rules won't allow it. Knights are noblemen. Always have been, always will be. It's a tradition that...
[Sees Gwen say goodbye to Gwaine]
Arthur: They seem very friendly.
Merlin: Why should you care?
Arthur: I don't.
[Gwen laughs]
Arthur: She could do better than that!
Merlin: What, she should be setting her sights... higher? Oh, but I forget, she can't. A girl of Gwen's standing, no. She can never consort with a nobleman. That's the rules.
Arthur: Merlin?
Merlin: Shut up.
Arthur: You guessed it.