From the Bible to the Greek myths to the brothers Grimm, everyone loves a good cautionary tale – and so do the gods, who have always made excellent use of these tasty bits of finger-wagging. Beginning with Eve and the apple, via Semele demanding that Jupiter make love to her in his divine form and getting carbonised for her pains, to Bluebeard’s inquisitive wife, to Matilda and her lies, these stories enforce social norms and provide the law-abiding with off-the-peg morsels of Schadenfreude in return for their docility.But art has always found a way to subvert. Breaking the rules is not such a bad thing: on the contrary, it is what makes us human. Even if disaster will probably follow, this is how mankind acquires forbidden knowledge and unlocks the secrets of the un