‘Ban, ‘Ban, Cacaliban
Has a new master: get a new man.

– William Shakespeare

The Tempest, Act 2, Scene 2. Why is the drunken Caliban singing in celebration of his freedom from serving his former master Prospero? He is merely swopping one master for another in Stephano, so ironically he is not entirely free. It may be that having been Prospero’s slave for so long, he cannot envisage any other way of life for himself.