Charlotte Hays points out that one of the great themes of Brian Moore's "catholic" books is loss of faith. This is true from the very earliest The Lonely Passion of Judith Hearne, for Black Robe, and to some extent Cold Heaven, although the latter book has a much richer texture of the struggle with/against faith and the meaning of free will.
In that context, I offer the following observation from the book:
Monsignor looked into the stubborn face, into those almost colorless eyes. Faith is a form of stupidity. No wonder they call it blind faith.
The wisdom of the world will always call it foolish, while wallowing in the mire of real foolishness. The wisdom of the wise is foolishness to the rich and to those whose sole meaning is derived from self. And finally, a fool for Christ is a wise man indeed.