In a chronological series of brief but utterly lucid notices on theologians, written works, councils and political trends, Siecienski draws out the key doctrinal points, traces the political and social factors that exacerbated them, and beautifully portrays the personalities and motives which fuelled divisions and various failed attempts at reunion...I cannot recommend this book enough for those interested in the topic, whether scholarly or amateur, whatever their own ecclesial or doctrinal commitments may be. It is highly informative, engaging and accessibly written. Jonathan L. Zecher, Theology Siecienski has made a significant contribution to a key issue in both historical theology and present day ecumenical relationships ... This is a well-formatted, readable volume with a solid argument, ample endnotes, and clear conclusions ... an excellent volume which I shall be recommending to all my students. Scott Harrower, Journal of Theological Studies
