To most Protestants (and many Roman Catholics), the Mass is a formal, mysterious ritual which typifies a formal, mysterious church. Last week Monsignor Ronald A. Knox, famed British scholar and detective-story writer, published a cheerful, witty, informal book called The Mass in Slow Motion (Sheed & Ward; $2.50). Designed to explain the mysterious Latin mumble-jumble of the Mass, the book combines reverence with readability.
Monsignor Knox, a longtime Roman Catholic chaplain at Oxford University, has lately been practicing what he calls "a highly specialized art form, that of sermons to schoolgirls." His detailed...