...Merlin has the best damn quotes in a film, ever. Period.
"That's it... and look upon this moment. Savour it! Rejoice with great gladness! Great gladness! Remember it always, for you are joined by it. You are One, under the stars. Remember it well, then... this night, this great victory. So that in the years ahead, you can say, 'I was there that night, with Arthur, the King!' For it is the doom of men that they forget."
"It is a lonely life, the way of the necromancer... oh, yes. Lacrimae Mundi - the tears of the world."
"Remember, there's always something cleverer than yourself."
Arthur: "Tell me, have we defeated evil, as it seems we have?"
Merlin: "Good and evil...there never is one without the other."
Arthur: "Where then does evil hide in my kingdom?"
Merlin: "Always where you never expect it...always."
Arthur: "Which is the greatest quality of knighthood? Courage, passion, loyalty, humility? What do you say, Merlin?"
Merlin: "Ah, the greatest...well, they blend, like the metals we mix to make a good sword."
Arthur: "No poetry, just a straight answer. Which is it?"
Merlin: "All right then...Truth. That's it, yes, it must be Truth, above all. When a man lies, he murders some part of the world. You should know that."
"A King should be afraid, Arthur, always... of the enemy. Waiting, everywhere. In the corridors of his castle, on the dear paths of his forests, or in a more gentle forest... in here." (taps head)
"There are other worlds. This one is done with me."
I hope, when I am about to die, I can remember that last line.