Thou poisonous slave, got by the devil himself
Upon thy wicked dam, come forth!
– William Shakespeare
The Tempest, Act 1, Scene 2. In calling Caliban, Prospero addresses him as you would an inferior and one who is required to do his bidding. The relationship between Prospero and Caliban, who occupied the island before Prospero came, is that of a colonizer and colonized slave.