Thou does me yet but little hurt. Thou wilt anon, I know it by thy trembling: now Prosper works upon thee.

– William Shakespeare

The Tempest, Act 2, Scene 2. Caliban says this to Trinculo, who is hiding under Caliban’s garment to protect himself from the storm. Caliban thinks that Trinculo is one of Prospero’s spirits coming to torture him because he is not working hard enough. This is further insight into Prospero the cruel master, who is apparently accustomed to tormenting his slave Caliban with pain if he doesn’t work hard – in this instance bringing his wood home fast enough.