You left out the best part:
DENNIS:
Listen. Strange women lying in ponds distributing swords is no basis for a system of government. Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony.
ARTHUR:
Be quiet!
DENNIS:
Well, but you can't expect to wield supreme executive power just 'cause some watery tart threw a sword at you!
ARTHUR:
Shut up!
DENNIS:
I mean, if I went 'round saying I was an emperor just because some moistened bint had lobbed a scimitar at me, they'd put me away!
I thought you, of all people, would quote the following part of the "autonomous collective" scene:
ARTHUR: Old woman!
DENNIS: Man!
ARTHUR: Man. Sorry. What knight lives in that castle over there?
DENNIS: I'm thirty-seven.
ARTHUR: I-- what?
DENNIS: I'm thirty-seven. I'm not old.
ARTHUR: Well, I can't just call you 'Man'.
DENNIS: Well, you could say 'Dennis'.
ARTHUR: Well, I didn't know you were called 'Dennis'.