Merlin: What are you afraid of?
Arthur: I don't know.
Merlin: Shall I tell you what's out there?
Arthur: Yes, please.
Merlin: The dragon. A beast of such power that if you were to see it whole and complete in a single glance, it would burn you to cinders.
Arthur: Where is it?
Merlin: It is everywhere. It is everything. Its scales glisten in the bark of trees. Its roar is heard in the wind. And its forked tongue strikes like...
[lightning strikes]
Merlin: Like lightning, yes that's it.
Arthur: How can I...? What shall I...? Must I...?
Merlin: Do nothing. Be still. Sleep. Rest in the arms of the dragon. Dream.

http://www.youtube.com/watch?v=NOqlV4Le9Tk&feature=related