"El paraíso perdido" by John Milton is an epic poem published in 1667. It retells the biblical story of humanity's fall: Satan's rebellion against God, his vengeful corruption of Adam and Eve in the Garden of Eden, and their expulsion from Paradise. Milton explores profound themes of free will, obedience, and redemption, seeking to "justify the ways of God to men." The poem features one of literature's most complex villains in Satan, whose tragic grandeur has sparked centuries of debate, and ends with hope for salvation.