Peter's Rock in Mohammed's Flood, from St. Gregory the Great to St. Leo III

Peter's Rock
Mohammed's Flood
From St. Gregory The Great to St. Leo III.
Being the Seventh Volume of
The Formation of Christendom
Thomas W. Allies, K.C.S.G.
London: Burns & Oats, Ld.
New York: Catholic Publication Society Co.
1890

It has been my purpose to exhibit the profound unity of the Christian Faith together with the infinite variety of its effects on individual character, on human society, on the action of nations towards each other, on universal as well as national legislation. Like the figure of the great Mother of God bearing her Divine Son in her arms, and so including the Incarnation and all its works, the Faith stands before us in history, “veste deaurata, circumdata varietate”. And as the personal unity appears in the symbol of the Divine Love to man expressed in her Maternity, so it appears also in the figure of the Church through the ages in which that Divine Love executes His work. A divided creed means a marred gospel and an incredulous world.
I offer this work as a single stone, though costing the labour of thirty years, if perchance it may be accepted in the structure of that Cathedral of human thought and action wherein our Crucified God is the central figure, around which all has grown.