Poetry reading of Concerning the Philosopher’s Stone by John Gower. John Gower (c. 1330 – October 1408) was an English poet, a contemporary of William Langland and the Pearl Poet, and a personal friend of Geoffrey Chaucer. He is remembered primarily for three major works, the Mirour de l’Omme, Vox Clamantis, and Confessio Amantis, three long poems written in French, Latin, and English respectively, which are united by common moral and political themes.