This book provides a critical study of the main Christian doctrines as understood and explained by Thomas Aquinas. The whole Thomistic revival of the last century focused almost exclusively on Aquinas as the Christian philosopher. Thus books and articles developed his understanding of being, his epistemology, natural theology, etc. However little has been done, even to this day, by way of examining Aquinas' teaching on the major Christian doctrines. This book of essays by an international team of recognised scholars will help fill this gap. Such a book will be indispensable to every theological library.