’Matthews' book on the impact of Anselm's argument on later quarrels among Dominicans and Franciscans is informative and persuasive. He brings to the Proslogion argument the historical contextualizing found in Taylor and MacIntyre, with illuminating effect. Medievalists and philosophers of religion will find Matthews' book a genuine contribution.' Ralph McInerny, University of Notre Dame, USA 'Scott Matthews has provided a contribution spanning both historical and analytical concerns. It is well worth attention for those interested in Anselm scholarship and critiques of rationality.' Modern Theology '... offers more experienced scholars a wealth of insights into the changing perception and reception of a challenging concept in philosophical theology.' Heythrop Journal '... a stimulating study of the way in which the friars made use of Anselm's Proslogion.' Revue d’Histoire Ecclésiastique