Introduction

[John]

Here the great Catholic historian Hilaire Belloc analyzes 5 of the greatest heresies of all time: Arianism, Mohammedanism (Islam), Albigensianism, Protestantism, and "the Modern Attack," showing that the world would be vastly different today if Arianism or Albigensianism had survived--and how it is different because Protestantism survived. He predicts the re-emergence of Islam; explains how the Modern Attack is the worst threat to the Catholic Church ever.

The questions this month are intended to focus discussion around each of the heresies that Belloc discusses, but as always, feel free to add your own questions.