I’ll swear upon that bottle to be thy true subject, for the liquor is not earthly.
– William Shakespeare
The Tempest, Act 2, Scene 2. Caliban pledges an oath of allegiance to Stephano, after imbibing liquor that he believes came from the gods, Stephano being one. There is a strong irony running through this scene of swearing devotion to this new "god," given Caliban’s history of violent rejection of Prospero’s imperialism and enslavement of him.