Book excerpt: This study presents the revolutionary thesis that English poetry and poetic theory were deflected from their richest line of development by the scientific rationalism that came with Hobbes and has continued its restrictive influence to the present day, when such poets as Yeats and Eliot have begun the reestablishment of the earlier line of development. Originally published in 1939. A UNC Press Enduring Edition -- UNC Press Enduring Editions use the latest in digital technology to make available again books from our distinguished backlist that were previously out of print. These editions are published unaltered from the original, and are presented in affordable paperback formats, bringing readers both historical and cultural value.