Milton introduces the subject of his epic poem Paradise Lost - humankind's first act of disobedience against God, which was the eating of the forbidden fruit by Adam and Eve. This act brought death and suffering into the world. Milton invokes his muse, identifying it as the Holy Spirit rather than the classical muses, and says he aims to write an epic that surpasses all previous works. The poem then focuses on Satan and his rebellion against God, including his fall from heaven and speech rallying his followers to continue fighting God despite their defeat. Satan leads his legions in constructing a great temple, Pandaemonium, to convene their planning.