Completely agree, belmurru, checked 'The Confessions' last night and that full quotation from Chapter 1 says it all, I was going to copy it in myself, with a further reference to round things off:
"The result was immediately apparent. A girl of the village, three miles away, asked me to employ her as my secretary. I had had no intention of doing any literary work; but as soon as I set eyes on her I recognized that she had been sent for a purpose, for she exactly resembled the aforesaid toad. I therefore engaged her to come out every morning an take dictation. I had with me a copy of Bernard Shaw's Androcles and the Lion and bethought myself that I would criticize the preface. THE ALMOST UNPARALLELED KNOWLEDGE OF THE TEXT OF THE BIBLE WHICH I HAD ACQUIRED IN EARLY CHILDHOOD was shocked by Shaw's outrageously arbitrary selection of the texts that sustained his argument. His ignorance of Asiatic life and thought had led him into the most grotesque misapprehensions. I set out to criticize his essay, section by section; but the work grew under my hand, and in three weeks or so, I had produced a formidable treatise of some forty-five thousand words."
Chapter 82, page 888 - suitably enough - in my old Bantam pb.