Paradise Lost is an epic poem in blank verse by the 17th-century English poet John Milton (1608–1674). The first version, published in 1667, consists of ten books with over ten thousand lines of verse. A second edition followed in 1674, arranged into twelve books (in the manner of Virgil's Aeneid) with minor revisions throughout. It is considered to be Milton's masterpiece, and it helped solidify his reputation as one of the greatest English poets of all time. The poem concerns the biblical story of the fall of man; the temptation of Adam and Eve by the fallen angel Satan and their expulsion from the Garden of Eden. Composition In his introduction to the Penguin edition of Paradise Lost, the Milton scholar John Leonard notes: "John Milton was nearly sixty when he published Paradise Lost in 1667. The biographer John Aubrey (1626–1697) tells us that the poem was begun in about 1658 and finished in about 1663. However, parts were almost certainly written earlier, and its roots lie in Milton's earliest youth." Leonard speculates that the English Civil War interrupted Milton's earliest attempts to start his "epic [poem] that would encompass all space and time". Leonard also notes that Milton "did not at first plan to write a biblical epic". Since epics were typically written about heroic kings and queens (and with pagan gods), Milton originally envisioned his epic to be based on a legendary Saxon or British king like the legend of King Arthur. Having gone blind in 1652, Milton wrote Paradise Lost entirely through dictation with the help of amanuenses and friends. He also wrote the epic poem while often ill, suffering from gout, and suffering emotionally after the early death of his second wife, Katherine Woodcock, in 1658, and their infant daughter. Structure In the 1667 version of Paradise Lost, the poem was divided into ten books. However, in the 1674 edition, the text was reorganized into twelve books. In later printing, "Arguments" (brief summaries) were inserted at the beginning of each book. Synopsis The poem follows the epic tradition of starting in medias res (in the midst of things), the background story being recounted later. Milton's story has two narrative arcs, one about Satan (Lucifer) and the other, Adam and Eve. It begins after Satan and the other fallen angels have been defeated and banished to Hell, or, as it is also called in the poem, Tartarus.