It has to be a jolting culture shock, or at any rate a severe case of the bends, for someone who has spent the past 60 years since completing the Gymnasium in 1942 studying, reading, translating, and interpreting St Augustine and St Thomas Aquinas, Martin Luther and the other sixteenth-century reformers, and the fourth-century Greek church fathers together with the Greek and Russian Orthodox tradition coming out of them, suddenly to be plunged into the rarefied atmosphere of this volume. Why, back where I come from, quantum is still a Latin interrogatory adjective in the neuter singular! One thing that I did learn, however, from Thomas Aquinas and his fellow scholastics was the doctrine of the analogia entis, the analogy of Being, which enables even a finite mind to speak by analogy about the Infinite (as the old proverb says, “A cat may look on a king”), because in some sense, at any rate in an analogous sense, it may be said that both of them “are,” even though only God “is” noncontingently; it has been brilliantly discussed in the Gifford Lectures of Professor Etienne Gilson at Aberdeen (Gilson 1944).