This booklet contains personal letters addressed to a parish priest of the Church of Rome, whose acquaintance I made on a railway journey. It was a pleasure to converse with this cultured gentleman. When we parted, he accepted from me a small volume dealing with a portion of holy scripture. Afterward he wrote me a very appreciative letter about the topics with which the book was concerned. There began a correspondence, which is being published with the hope that they may prove helpful to the reader.