Endymion by John Keats

 Endymion is a poem by John Keats first published in *1818. It begins with the line "A thing of beauty is a joy forever". Endymion is written in rhyming couplets in iambic pentameter (also known as heroic couplets). Keats based the poem on the Greek myth of Endymion, the shepherd beloved by the moon goddess Selene. The poem elaborates on the original story and renames Selene "Cynthia" (an alternative name for Artemis)