"Deep" means the root vision of traditional Anglicanism. It means digging down to see how the greatest Anglican minds and hearts saw the Trinitarian God, and the ways they saw this God come to his people through the Church of Jesus Christ. It means starting in the first centuries of Christianity in the British Isles and not simply the sixteenth century. It means exploring the wealth of Anglican spirituality in the 14th and 17th centuries. It means...