Thought of Gregory the Great, Paperback by Evans, G. R., ISBN 052136826X, ISBN-13 9780521368261, Brand New, Free shipping in the US Reveals how Gregory the Great was, after Augustine of Hippo, among the most influential of the Fathers in the Latin West during the Middle Ages. In addition to documenting Gregory’s influence on his own age, the text describes the impact of his ideas on later centuries.