'Robert Bireley is a leading authority on Counter-Reformation Catholicism and the author of many previous books, including a study of William Lamormaini, Ferdinand II's Jesuit confessor. Bireley's grasp of the religious politics and international diplomacy of this period in Central European history is unrivaled. His judgments on Ferdinand's actions are sensitive and generally sympathetic, but not uncritical … Bireley's carefully documented analysis has many strengths. One of them lies in his appreciation of the differences among European Catholics in this period.' Paul Monod, America: The National Catholic Review
'… a solid contribution that will orient future research. Nurtured by many years of research in a whole range of archives, Bireley's study excels when analyzing the process of imperial decision-making.' Luc Duerloo, The American Historical Review
'In this well-written biography, Robert Bireley ably retells Ferdinand's story: his efforts shoring up the family, prosecuting a war, and reviving Catholicism's flagging fortunes. Bireley's Ferdinand II, Counter-Reformation Emperor, 1578–1637 is the culmination of a long and prolific career dedicated primarily to the study of early-modern religion and politics.' Howard Louthan, The Catholic Historical Review