James Hilton (novelist) picked "Lost Horizon" as its first title in 1939. For that reason, the novel is frequently called the book that began the "paperback revolution." Hilton is said to have been inspired to write "Lost Horizon", and to invent "Shangri-La" by reading the "National Geographic Magazine" articles of Joseph Rock, an Austrian-American botanist and ethnologist exploring the southwestern Chinese provinces and Tibetan borderlands. Still living in Britain at the time, Hilton was perhaps influenced by the Tibetan travel articles of early travellers in Tibet whose writings were found in the British Library. Christian Zeeman, the Danish father of the mathematician Christopher
Paradise Regained insight into "Paradise Regained"s development. After studying Latin with Milton and reading the poet's epic "Paradise Lost", Ellwood remarked, "Thou hast said much here of Paradise lost, but what hast thou to say of Paradise found?" Hearing this, Milton at first "sat some time in a muse" before changing the subject; however, sometime thereafter he showed to Ellwood a new manuscript entitled "Paradise Regained." Some maintain that although he seemed to express gratitude to Ellwood in a letter, Milton in truth "passed on a friendly if impish fabrication" that made Ellwood feel like the inspiration for the poem. Milton composed