Alvin Plantinga

This is especially clear in the case of Jean Paul Sartre's philosophy of freedom. Existentialists in general and Sartre in particular argue that an analysis, not of human nature, indeed, but of, say, "the universal human condition" reveals that certain kinds of behavior are morally appropriate and others morally reprehensible. My aim in this paper is to show that Sartre's analysis of "the universal human condition" is quite inconsistent with morality in anything like the ordinary sense. We might think that attempt otiose in view of Sartre's notorious rejection of "absolute values." But in spite of his claim to dispense with absolute morality, Sartre's philosophy, like other existentialist philosophies, is through-and-through ethical. A concern with the human condition and its implications for morality is the moving force behind Sartre's thought. "Bad faith," "responsibility," "anguish,"--these and other ethical notions play a central role in Sartre's philosophy of freedom. Though he has in one sense rejected "absolute values" in another sense he accepts the absolute values of authenticity and good faith, recommends these values to others, and passes moral judgment upon those who live in "bad faith."

First, I'd like to thank Professors Van Till, Pun, and McMullin for their careful and thoughtful replies. There is a deep level of agreement among all four of us; as is customary with replies and replies to replies, however, I shall concentrate on our areas of disagreement. In the cases of Van Till and McMullin, this may give an impression of deeper disagreement than actually exists. In the case of Pun it leaves me with little to say except Yea and Amen; I find no serious disagreement between us.

The Ontological Argument for the existence of God has and puzzled philosophers ever since it was first formulated by St. Anselm. I suppose most philosophers have been inclined to reject the argument, although it has an illustrious line of defenders extending to the present and presently terminating in Professors Malcolm and Hartshorne. Many philosophers have tried to give general refutations of the argument-refutations de- signed to show that no version of it can possibly succeed-of which the most important is, perhaps, Kant's objection, with its several contemporary variations. I believe that none of these general refutations are successful; in what follows I shall support this belief by critically examining Kant's objection

I took it that the definitions Swinburne quotes imply that all of a person's basic beliefs are rational; Swinburne demurs. It still seems to me that these definitions have this consequence. Let me briefly explain why. According to Swinburne, a person's evidence consists of his basic beliefs, weighted by his confidence in them. So presumably we are to think of S's evidence as the set of the beliefs he takes in the basic way, together with a sort of index indicating, for each of those beliefs, his degree of confidence in that belief. Now it is clear, first, that different basic beliefs can be held with different degrees of confidence. I believe 2+1 = 3 more firmly than there are presently some large trees in my backyard, and I believe that second proposition more firmly than I played bridge last night. Nevertheless, I believe all three propositions; I don't just believe them probably. So, the set of my basic beliefs contains propositions, all of which I believe. Further, a belief of mine is ‘rendered probable by [my] evidence’, I take it, just if it is probable with respect to the set of my basic beliefs. But of course probability of 1 with respect to that set; the degree of confidence with which I hold those beliefs does not seem to be relevant. Hence my conclusion that on these definitions all of my basic beliefs are rational. Swinburne points out that some of my basic beliefs may be improbable with respect to the rest of my basic beliefs; these beliefs, then, might be thought irrational, at least if they are not held as firmly as those with respect to which they are improbable. But this seems to me an uninteresting sense of ‘irrational’. Many of my basic beliefs are improbable with respect to my other basic beliefs; they are none the worse for that. I now remember, as it seems to me, that in the second bridge hand last night I was dealt three aces, three jacks, and three deuces. This is unlikely on the rest of my basic beliefs. It is, nonetheless, not irrational in any useful sense; memory is an important and independent source of rational belief, a source such that its deliverances do not necessarily depend, for warrant or rationality, on their probability with respect to other basic beliefs. I believe the same goes for some of my Christian beliefs. They may be improbable with respect to other beliefs, basic or otherwise, that I hold; but that need be nothing whatever against them. Footnotes1 Note: This brief discussion arises out of Richard Swinburne's critical notice of Alvin Plantinga 's Warranted Christian Belief and Plantinga 's reply in Religious Studies, 37, 203–214, 215–222

Take naturalism to be the idea that there is no such person as God or anything like God. Many philosophers hold that naturalism can accommodate serious moral realism. Many philosophers (and many of the same philosophers) also believe that moral properties supervene on non-moral properties, and even on naturalistic properties (where a naturalistic property is one such that its exemplification is compatible with naturalism). I agree that they do thus supervene, and argue that this makes trouble for anyone hoping to argue that naturalism can accommodate morality.

Can belief in God be rationally justified? Reviewing in detail traditional and modern arguments for and against the existence of God, Professor Plantinga concludes that they must all be judged unsuccessful. He then turns to the related philosophical problem of the existence of other minds, and defends the so-called analogical argument against current criticisms. He goes on to show, however, that although this argument affords us the best reasons we have for belief in other minds, it finally succumbs to the same malady that afflicts the teleological argument of God.