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Request removal from index. Giving the Ontological Argument Its Due. Paley's Argument for Design. Graham Oppy - - Philo 5 2: Graham Oppy - - Philo 10 1: Graham Oppy on the Kalam Cosmological Argument. Schupbach - - Philosophia Christi 7 2: A Reply to Oppy. Check out the top books of the year on our page Best Books of Product details Format Hardback 93 pages Dimensions x x Illustrations note VI, 93 p.

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Looking for beautiful books? Visit our Beautiful Books page and find lovely books for kids, photography lovers and more. Other books in this series. The Future of Foreign Aid A. Analyzing the Drone Debates: Global and Transnational History Akira Iriye. Ritchie presses a kind of dilemma on non-theistic accounts of morality. Subjectivist theories such as expressivism can certainly make sense of the fact that we make the ethical judgments we do, but they empty morality of its objective authority.

Objectivist theories that take morality seriously, however, have difficulty explaining our capacity to make true moral judgments, unless the process by which humans came to hold these capacities is one that is controlled by a being such as God. The moral argument from knowledge will not be convincing to anyone who is committed to any form of expressivism or other non-objective metaethical theory, and clearly many philosophers find such views attractive.

And there will surely be many philosophers who will judge that if moral objectivism implies theism or requires theism to be plausible, this is a reductio of objectivist views. Furthermore, non-theistic moral philosophers, whether naturalists or non-naturalists, have stories to tell about how moral knowledge might be possible. Nevertheless, there are real questions about the plausibility of these stories, and thus, some of those convinced that moral realism is true may judge that moral knowledge provides some support for theistic belief.

Like subjectivists, constructivists want to see morality as a human creation. However, like moral realists constructivists want to see moral questions as having objective answers. Constructivism is an attempt to develop an objective morality that is free of the metaphysical commitments of moral realism. It is, however, controversial whether Kant himself was a constructivist in this sense.

One reason to question whether this is the right way to read Kant follows from the fact that Kant himself did not see morality as free from metaphysical commitments. For example, Kant thought that it would be impossible for someone who believed that mechanistic determinism was the literal truth about himself to believe that he was a moral agent, since morality requires an autonomy that is incompatible with determinism.

When we do science we see ourselves as determined, but science tells us only how the world appears, not how it really is. Humans can only have this kind of value if they are a particular kind of creature.

Is Naturalism simpler than Theism? Some reflections on Graham Oppy’s “Best argument against God”

Whether Kant himself was a moral realist or not, there are certainly elements in his philosophy that push in a realist direction. If the claim that human persons have a kind of intrinsic dignity or worth is a true objective principle and if it provides a key foundational principle of morality, it is well worth asking what kinds of metaphysical implications the claim might have. This is the question that Mark Linville , — pursues in the second moral argument he develops.

Clearly, some metaphysical positions do include a denial of the existence of human persons, such as forms of Absolute Monism which hold that only one Absolute Reality exists. Daniel Dennett, for example, holds that persons will not be part of the ultimately true scientific account of things. A naturalist may want to challenge premise 2 by finding some other strategy to explain human dignity.

Michael Martin , for example, has tried to suggest that moral judgments can be analyzed as the feelings of approval or disapproval of a perfectly impartial and informed observer. Linville objects that it is not clear how the feelings of such an observer could constitute the intrinsic worth of a person, since one would think that intrinsic properties would be non-relational and mind-independent. Another strategy that is pursued by constructivists such as Korsgaard is to link the value ascribed to humans to the capacity for rational reflection. The idea is that insofar as I am committed to rational reflection, I must value myself as having this capacity, and consistently value others who have it as well.

It is far from clear that human rationality provides an adequate ground for moral rights, however. Many people believe that young infants and people suffering from dementia still have this intrinsic dignity, but in both cases there is no capacity for rational reflection. Wolterstorff in this work defends the claim that there are natural human rights, and that violating such rights is one way of acting unjustly towards a person. Why do humans have such rights? Wolterstorff says these rights are grounded in the basic worth or dignity that humans possess.

When I seek to torture or kill an innocent human I am failing to respect this worth. If one asks why we should think humans possess such worth, Wolterstorff argues that the belief that humans have this quality was not only historically produced by Jewish and Christian conceptions of the human person, but even now cannot be defended apart from such a conception. In particular, he argues that attempts to argue that our worth stems from some excellence we possess such as reason will not explain the worth of infants or those with severe brain injuries or dementia. Does a theistic worldview fare better in explaining the special value of human dignity?

In a theistic universe God is himself seen as the supreme good. Indeed, theistic Platonists usually identify God with the Good. If God is himself a person, then this seems to be a commitment to the idea that personhood itself is something that must be intrinsically good. This argument will of course be found unconvincing to many. Some will deny premise 1 , either because they reject moral realism as a metaethical stance, or because they reject the normative claim that humans have any kind of special value or dignity.

Others will find premise 2 suspect. They may be inclined to agree that human persons have a special dignity, but hold that the source of that dignity can be found in such human qualities as rationality. With respect to the status of infants and those suffering from dementia, the critic might bite the bullet and just accept the fact that human dignity does not extend to them, or else argue that the fact that infants and those suffering mental breakdown are part of a species whose members typically possess rationality merits them a special respect, even if they lack this quality as individuals.

Others will find premise 2 doubtful because they find the theistic explanation of dignity unclear.

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Another alternative is to seek a Constructivist account of dignity, perhaps regarding the special status of humans as something we humans decide to extend to each other. Perhaps the strongest non-theistic alternative would be some form of ethical non-naturalism, in which one simply affirms that the claim that persons have a special dignity is an a priori truth requiring no explanation.

In effect this is a decision for a non-theistic form of Platonism.

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The proponent of the argument may well agree that claims about the special status of humans are true a priori, and thus also opt for some form of Platonism. However, the proponent of the argument will point out that some necessary truths can be explained by other necessary truths. The theist believes that these truths about the special status of humans tell us something about the kind of universe humans find themselves in. To say that humans are created by God is to say that personhood is not an ephemeral or accidental feature of the universe, because at bottom reality itself is personal Mavrodes As already noted, the most famous and perhaps most influential version of a moral argument for belief in God is found in Immanuel Kant Kant himself insisted that his argument was not a theoretical argument, but an argument grounded in practical reason.

Morality is grounded in pure practical reason, and the moral agent must act on the basis of maxims that can be rationally endorsed as universal principles. Moral actions are thus not determined by results or consequences but by the maxims on which they are based. However, all actions, including moral actions, necessarily aim at ends. However, I must seek the highest good only by acting in accordance with morality; no shortcuts to happiness are permissible.

This seems to require that I believe that acting in accordance with morality will be causally efficacious in achieving the highest good. However, it is reasonable to believe that moral actions will be causally efficacious in this way only if the laws of causality are set up in such a way that these laws are conducive to the efficacy of moral action. Certainly both parts of the highest good seem difficult to achieve.


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We humans have weaknesses in our character that appear difficult if not impossible to overcome by our own efforts. Furthermore, as creatures we have subjective needs that must be satisfied if we are happy, but we have little empirical reason to think that these needs will be satisfied by moral actions even if we succeeded in becoming virtuous.

If a person believes that the natural world is simply a non-moral machine with no moral purposiveness then that person would have no reason to believe that moral action could succeed because there is no a priori reason to think moral action will achieve the highest good and little empirical reason to believe this either. Even if the Kantian highest good seems reasonable as an ideal, some will object that we have no obligation to achieve such a state, but merely to work towards realizing the closest approximation to such a state that is possible See Adams , Without divine assistance, perhaps perfect virtue is unachievable, but in that case we cannot be obliged to realize such a state if there is no God.

Perhaps we cannot hope that happiness will be properly proportioned to virtue in the actual world if God does not exist, but then our obligation can only be to realize as much happiness as can be attained through moral means. Kant would doubtless reject this criticism, since on his view the ends of morality are given directly to pure practical reason a priori, and we are not at liberty to adjust those ends on the basis of empirical beliefs.

Morality requires me to sacrifice my personal happiness if that is necessary to do what is right. Yet it is a psychological fact that humans necessarily desire their own happiness. Reason both requires humans to seek their own happiness and to sacrifice it. Sidgwick himself noted that only if there is a God can we hope that this dualism will be resolved, so that those who seek to act morally will in the long run also be acting so as to advance their own happiness and well-being.

Interestingly, Sidgwick himself does not endorse this argument, but he clearly sees this problem as part of the appeal of theism.


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A contemporary argument similar to this one has been developed by C. The critic of this form of the Kantian argument may reply that Kantian morality sees duty as something that must be done regardless of the consequences, and thus a truly moral person cannot make his or her commitment to morality contingent on the achievement of happiness.

The Best Argument Against God

From a Kantian point of view, this reply seems right; Kant unequivocally affirms that moral actions must be done for the sake of duty and not from any desire for personal reward. Nevertheless, especially for any philosopher willing to endorse any form of eudaimonism, seeing myself as inevitably sacrificing what I cannot help but desire for the sake of duty does seem problematic.

The critic may reply to this by simply accepting the lamentable fact that there is something tragic or even absurd about the human condition. The world may not be the world we wish it was, but that does not give us any reason to believe it is different than it is. If there is a tension between the demands of morality and self-interest, then this may simply be a brute fact that must be faced.

This reply raises an issue that must be faced by all forms of practical or pragmatic arguments for belief. Many philosophers insist that rational belief must be grounded solely in theoretical evidence. The fact that it would be better for me to believe p does not in itself give me any reason to believe p.

This criticism is aimed not merely at Kant, but at other practical moral arguments. For example, Robert Adams argues that if humans believe there is no moral order to the universe, then they will become demoralized in their pursuit of morality, which is morally undesirable , The atheist might concede that atheism is somewhat demoralizing, but deny that this provides any reason to believe there is a moral order to the universe. Similarly, Linda Zagzebski argues that morality will not be a rational enterprise unless good actions increase the amount of good in the world.

However, given that moral actions often involve the sacrifice of happiness, there is no reason to believe moral action will increase the good unless there is a power transcendent of human activity working on the side of the good. Here the atheist may claim that moral action does increase the good because such actions always increase good character. However, even if that reply fails the atheist may again simply admit that there may be something tragic or absurd about the human condition, and the fact that we may wish things were different is not a reason to believe that they are.

So the problem must be faced: Are practical arguments merely rationalized wish-fulfillment? The theist might respond to this kind of worry in several ways. The first thing to be said is that the fact that a naturalistic view of the universe implies that the universe must be tragic or absurd, if correct, would itself be an important and interesting conclusion. However, apart from this, it makes a great deal of difference how one construes what we might call the background epistemic situation.

If one believes that our theoretical evidence favors atheism, then it seems plausible to hold that one ought to maintain a naturalistic view, even if it is practically undesirable that the world have such a character. In that case a practical argument for religious belief could be judged a form of wish-fulfillment. However, this does not seem to be the way those who support such a practical argument see the situation.

However, as a regulative ideal, the concept of God is one that theoretical reason finds useful: There is a sense in which theoretical reason itself inclines towards affirmation of God, because it must assume that reality is rationally knowable: Thus, if rational grounds for belief in God come from practical reason, theoretical reason will raise no objections.

Human beings are not purely theoretical spectators of the universe, but agents. It is not always rational or even possible to refrain from action, and yet action presupposes beliefs about the way things are For a good interpretation and defense of this view of Kant on the relation between action and belief, see Wood , 17— Thus, in some cases suspension of judgment is not possible. The critic may object that a person may act as if p were true without believing p. However, it is not clear that this advice to distinguish action on the basis of p and belief that p can always be followed.

For one thing, it seems empirically the case that one way of acquiring belief that p is simply to begin to act as if p were true. Hence, to begin to act as if p were true is at least to embark upon a course of action that makes belief in p more likely. This is obviously the case on pragmatist accounts of belief. But even those who reject a general pragmatic account of belief may well find something like this appealing with respect to religious belief.