text: This man expressed a desire to "unsphere / the spirit of Plato to unfold / what worlds or what vastregions hold / the immortal mind" in a poem that features invocations of Saturn, Vesta, and Urania.
full_question: This man expressed a desire to "unsphere / the spirit of Plato to unfold / what worlds or what vastregions hold / the immortal mind" in a poem that features invocations of Saturn, Vesta, and Urania. He declares "Mirth, with thee I mean to live" at the end of one poem, while in that poem's companion, he dismissed "vain deluding joys" in favor of "divinest Melancholy". In a non-fiction work, this man asserted that "he who destroys a good (*) book, kills reason itself." He coined the phrase "they also serve who only stand and wait" in a sonnet that begins with the line "When I consider how my light is spent" and reflects on his blindness. For 10 points, name this author of "L'Allegro" and "Il Penseroso", as well as Areopagitica and the epic poem Paradise Lost.
first_sentence: This man expressed a desire to "unsphere / the spirit of Plato to unfold / what worlds or what vastregions hold / the immortal mind" in a poem that features invocations of Saturn, Vesta, and Urania.
raw_answer:  John Milton