Few Western thinkers have been more influential and less known than Peter Damian (1007-1072). After centuries of neglect and misinterpretation, the man who emerges from Patricia Ranft's exhaustive investigation of his writings will surprise many. Immoderate in rhetoric yet moderate in teachings, Peter Damian is a man for the ages. Damian began his career in the schools of northern Italy but soon joined a community of hermits at Fonte Avellana. His...