There are a couple of Shakespeare references in Act IV that had me howling. First of course, is Mrs Malaprop and her quoting Hamlet to describe Jack:

"Herperian curls - the front of Job himself!-
An eye, like March, to threaten at command!-
A station, like Harry Mercury, new-

Something about kissing - on a hill - however, the similitude struck me directly."

This is the real quote from Act III, Scene IV where Hamlet is showing his mother his father's portrait and describing him:

"Hyperion's curls; the front of Jove himself;
An eye like Mars, to threaten and command;
A station like the herald Mercury
New-lighted on a heaven-kissing hill;"

"Something about kissing - on a hill - " LOL! She just kills me.

The other was David's speech on honor being a stupid reason to duel:

"Look-ee, master, this honour seems to me to be a marvelous false friend … I kill him .. now, pray who gets the profit of it? - Why, my honour. But put the cause that he kills me! - by the mass! I go to the worms, and my honour whips over to my enemy."

It reminded me of Falstaff's speech in Henry IV, Part I, Act V, Scene I:

"What is in that word honour? Who hath it? …he that died o' Wednesday. Doth he feel it? no. Doth he hear it? no. 'Tis insensible, then. Yea, to the dead. But will it not live with the living? no. Why? detraction will not suffer it. Therefore I'll none of it."