Argument about the existence of God is rare, for religious beliefs are effectively supported in our society by means that are not principally rational. It is common to answer the question "Why are you a believer?" with "Because I was taught to be," uttered in the tone of voice, or in the context, of one presenting reasons, not mere causes, of belief. It is even more common to speak of faith in God as if this were a specially compelling reason for belief and, moreover, one beyond logical criticism. Faith, however, is merely determination to believe and no kind of reason. Literature giving such justifications is not considered in this entry. Despite this omission of the greater part of the popular writing and what one might call the traditional verbal folklore of religion, a vast quantity...