This book is meant to be a companion to Heretics, and to put the positive side in addition to the negative. Many critics complained of the book because it merely criticised current philosophies without offering any alternative philosophy. This book is an attempt to answer the challenge. It is the purpose of the writer to attempt an explanation, not of whether the Christian Faith can be believed, but of how he personally has come to believe it.

The book is therefore arranged upon the positive principle of a riddle and its answer. It deals first with all the writer's own solitary and sincere speculations and then with the startling style in which they were all suddenly satisfied by the Christian Theology. The writer regards it as amounting to a convincing creed. But if it is not that it is at least a repeated and surprising coincidence.

Summa Theologica is a monumental work by St. Thomas Aquinas that aims to summarize all human knowledge. Although such an undertaking might seem ambitious even today, this classic masterpiece remains a cornerstone in philosophical and theological literature.

Through its comprehensive examination of enduring questions, Aquinas provides timeless insights into the nature of existence, ethics, and the divine. His work continues to inspire and challenge readers, encouraging them to engage with fundamental questions that have persisted through the centuries.

This collection, spanning five volumes, delves deep into the complexities of faith and reason, offering readers a chance to explore the intricacies of medieval thought and its relevance today.