Christianity is an enormously complex edifice whose numberless cubicles were built brick by brick over two thousand years. In it, every detail has been thought through so that it meshes perfectly with the constructs that went before. The bricks were shaped by scholarly men and women, theologians and saints, who wrote for the edification of their contemporaries. In this book, I have gathered some excerpts from their writings and organized them under the rubrics of the commandments, the tenets of the creed, the sacraments, and prayer. These materials should help us gain a deeper understanding of our faith and place us in the traditions that formed it.