Alvin Plantinga

This paper is a continuation of a discussion with Ernan McMullin; its topic is the question how theists (in particular, Christian theists) should think about modern science---the whole range of modern science, including economics, psychology, sociobiology and so on. Should they follow Augustine in thinking that many large scale scientific projects as well as intellectual projects generally are in the service of one or the other of the civitates? Or should they follow Duhem, who (at least in the case of physics) held that proper science is independent of metaphysical, theological or (broadly) religious concerns? The focus of the discussion is biology; I support the Augustinian line of thought, while McMullin is more inclined to the Duhemian. I conclude by defending the idea that the epistemic probability of the Grand Evolutionary Scenario on Christian theism together with the empirical evidence is somewhat less than 1/2.

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."