Prometheus Boundis the starkest and strangest of the classic Greek tragedies, a play in which god and man are presented as radically, indeed irreconcilably, at odds. The play begins with the shock of hammer blows as the Titan Prometheus is shackled to a rock in the Caucasus where day after day an eagle will return to devour his liver. This is his punishment not only for the gift of fire to humankind but for thwartingZeus's decision to exterminate the human race. Prometheus's pain is unceasing, but he regrets nothing and when he is invited to make peace with Zeus, he only reaffirms his commitment to humanity, to whom he has brought not only fire but the knowledge of writing, mathematics, medicine, and architecture. Prometheus hints that he knows how Zeus will be brought low in the future, but when Hermes comes as Zeus's emissary to demand that Prometheus divulge his secret, he refuses and is sent spinning into the abyss by a divine thunderbolt.