Father Guardini, one of the most widely read and prolific of modern spiritual writers, has composed a book of meditations on the Church, covering such topics as the Church as the expression of the will of Christ, revelation and mystery, the Church as guardian and dispenser of truth, the eschatalogical nature of the Church, etc. The fluency of style and concreteness of treatment which have assured Guardini's popularity for almost half a century are in ample evidence here, and the book will have as wide an appeal as the author's early volumes.