William Phipps' study gives a comprehensive, historically-based account of the commitment of the Roman Catholic Church to a celibate priesthood. His position is, he states, 'conservative, not radical. Mandatory celibacy is relatively new-fangled, having appeared during the last half of the church's existence. The innovation was imposed in the feudal and crusading era, a dark period for the Church.' Phipps' understanding comes from probing ancient...