The literary critic Harold Bloom in his book "Shelley's Mythmaking" expresses his high expectation of Shelley in the tradition of mythopoeic poetry. For Bloom, Percy Shelley's relationship to the tradition of mythology in poetry "culminates in 'Prometheus'. The poem provides a complete statement of Shelley's vision." Bloom devotes two full chapters in this 1959 book to Shelley's lyrical drama "Prometheus Unbound". Following his 1959 book, Bloom edited an anthology of critical opinions on Shelley for Chelsea House Publishers where he concisely stated his opinion as, "Shelley is the unacknowledged ancestor of Wallace Stevens' conception of poetry as the Supreme Fiction, and "Prometheus Unbound" is the most capable imagining, outside of Blake and Wordsworth, that the Romantic quest for a Supreme Fiction has achieved."