Endorsements & Reviews-
'For Matthew Knell in this important study the twelfth century is much more than a gateway to the thirteenth, it is a treasure trove of theology, and particularly pneumatology, in its own right. Knell shows that in this period the mutual love theory, from its humble beginnings in Augustine, attained its greatest prominence and sophistication, before there began its decline, which took place largely, if unintentionally, at the hands of Aquinas. Its reemergence in our own time as a resource for such pressing questions as the filioque and the salvific role of the world religions receives strong support from this work. Matthew Knell's book offers little comfort to overzealous Western ecumenists willing to sacrifice the filioque in the interests of reunion between the Christian East and West. Highly recommended to teachers and students and to all readers interested in ecumenism.'
David Coffey is former William J. Kelly Chair of Theology at Marquette University, Milwaukee, Wisconsin, USA
'Bold and perceptive, this book is a remarkably able systematic piece of historical theology. It furnishes a comprehensive and accurate evaluation of a neglected perspective on the immanent person of the Holy Spirit held by various thinkers in an important period of theological traditions.'
Dennis Ngien is Research Professor of Theology at Tyndale University College and Seminary, and founder of the Centre for Mentorship and Theological Reflection, Toronto, Canada, from the Foreword
'Matthew Knell has done a superb job in illuminating a little explored period in the history of thought about the Holy Spirit. He sheds light on the discussions by first expounding the key thinkers then the key concepts. His study shows that this period has been unjustly neglected and has some fruitful insights to offer.'
Anthony N.S. Lane is Director of Research and Professor of Historical Theology at London School of Theology, United Kingdom