Gaius: "Sometimes two heads are better than one."

Arthur: "You're not going to die, Merlin. Don't be such a coward."

Merlin: "Ac-o-nite. Well, I think I should take some of this with me from now on. You never know when you might need to kill someone."

Gaius: "Magic is neither good nor bad. It's how you use it."

Gaius: "Sometimes I do wonder whether your magical talents were given to the right person. Anything else?"

Merlin: "The sorceress. She likes to be paid in clothes. She can't get to a tailor."

Merlin: "I've never had a friend who could be such an ass."
Arthur: "Nor I one who could be so stupid."

Arthur: "Where have you been?"
Merlin: "Were you worried about me?"
Arthur: "No. I was making sure we weren't being followed."
Merlin: "You came back to look for me."
Arthur: "All right. It's true. I came back 'cause you're the only friend I have and I couldn't bear to lose you."
Merlin: "Really?"
Arthur: "Don't be stupid."

Merlin: "You're destined to be Albion's greatest king. Nothing, not even the stone, can stand you in the way."

Sir Leon: "No, Arthur. Is YOU the people love, and you they will lay down their lives for. I know that I would ride into the mouth of hell for you."