There is much in this book that, with a brief and masterly touch, reveals a vast insight into strange and little understood realms -- the power lines that structure the inner earth, the communion of saints so neglected by the churches, the relationship of angels with humanity. The book is traditional in that it centers down upon the Holy Trinity and the Eucharist, and yet revolutionary in some of its moral injunctions -- most remarkably, the calling of humanity to a life of active and daring communion with the living Lord of the Dance.