Herbert McCabe struck those who met him (Alasdair MacIntyre, Anthony Kenny, Terry Eagleton, Denys Turner) or those who read his writings (David Burrell, Stanley Hauerwas) for his high intelligence. He was the most intelligent philosopher after the death of Karl Popper. His philosophical inquiries on God and the Human Being have yet to be properly understood, not because they were abstruse (clarity was McCabe's inexorable sword!) but because of their dizzying depth, for which many are not yet prepared. This is the first comprehensive study of McCabe, a person who preferred speaking to writing and left only the short--fragmented and dispersed--texts of his lectures and sermons. But in this book, to use David Burrell's words, Manni has "managed to get inside McCabe's mind" and assemble together for the first time the disiecta membra of a powerful system of thought.