Garry Wills (author of “Why I am a Catholic”), in “Why Priests,” describes the development of Eucharistic theology in the Middle Ages (p. 43): William of Ockham (c. 1288–c. 1346), also known as Occam, wrote a long treatise on the Sacrament of the Altar. There he admitted (because the dogma of the Resurrection demanded it)…