The first of Ronald Knox's three "Slow Motion" collections, The Mass in Slow Motion comprises fourteen sermons preached during World War II to the students of the Assumption Sisters at Aldenham Park. Modest yet arresting in style, Knox explains the Mass from the opening psalm to the solemn words of conclusion: Ite missa est. While the liturgy Knox contemplates is that of the Tridentine Rite, the abundant fruits of his contemplation...