Prometheus is the Titan whose name means "forethought," and in Greek myth he is the great benefactor and champion of humankind against the gods. When Zeus withheld fire from mortals, Prometheus stole it, carrying it down, in Hesiod's account, hidden in a fennel stalk, and gave it to humanity, and with it the arts of civilization: for later writers, everything from metalwork and medicine to writing and number.
In Hesiod he also tricks Zeus at Mecone over the division of the sacrificial ox, arranging that the gods receive the bones wrapped in fat while humans keep the meat, a myth that explains why sacrifice takes the form it does. For these thefts and deceptions on humanity's behalf Zeus exacts a terrible punishment: Prometheus is chained to a rock in the Caucasus, and each day an eagle devours his liver, which grows back each night, so that the torment is endless, until, generations later, Heracles shoots the eagle and frees him. Aeschylus, in Prometheus Bound, made him the archetype of noble defiance against tyranny, suffering for a gift to others; and the Romantics, Shelley, Byron, Mary Shelley's "modern Prometheus", took him up as the very symbol of rebellion, creativity, and the costs of stealing power from the gods.