You Taught Me the Language, Now I Know How To Curse

Act 1 Scene 2

Caliban: "You taught me language, and my profit on't is, I know how to curse. The red plague rid you for learning me your language"

I think Caliban is angry with Prospero for invading the island that once belonged to him and changing everything, although it wasn't really his to change. I agree with Caliban and I think Prospero is using the "education" that he gave Caliban for a guilt trip and tries to make Caliban look like the bad guy when really he didnt do anything to deserve being basically enslaved by the person who stole his island. I dont think it is fair that  Prospero felt entitled to change Caliban to be more like himself and to adapt to his way of life.