The Tempest Betrayal Quotes

How we cite our quotes: (Act.Scene.Line). Line numbers correspond to the 2008 Norton edition.

Quote #7

SEBASTIAN
I remember
You did supplant your brother Prospero.
ANTONIO
                                                                True,
And look how well my garments sit upon me,
Much feater than before. My brother's servants
Were then my fellows; now they are my men.
SEBASTIAN
But, for your conscience?
ANTONIO
Ay, sir, where lies that? (2.1.310-317)

Antonio comes easily to his acts of betrayal because he has no conscience, or at the least he represses it well.  (Actually, we think he doesn't have one.)  Antonio is an example of how one's conscience can get worn out; evil acts become easier and easier with practice.

Quote #8

GONZALO
Now, good angels preserve the
King! (2.1.351-352)

Gonzalo is loyal to a fault. On hearing that big monsters are running around the island, he calls upon the angels to protect not all of them, or just him, but the king. Is this a hint that Gonzalo suspects Sebastian and Antonio are plotting to betray Alonso?

Quote #9

CALIBAN
I say by sorcery he got this isle; 
From me he got it. If thy greatness will,
Revenge it on him, for I know thou dar'st,
But this thing dare not. (3.2.59-62)

If we can believe what Caliban says, then Prospero won the isle from him through betrayal. Why then does Caliban not dare to betray Prospero? Is it anything more than the pinches and cramps he knows he'll get as punishment?