The interpretation of Lewis‘s doctrine of natural properties is difficult and controversial, especially when it comes to the bearers of natural properties. According to the prevailing reading – the minimalist view – perfectly natural properties pertain to the micro-physical realm and are instantiated by entities without proper parts or point-like. This paper argues that there are reasons internal to a broadly Lewisian kind of metaphysics to think that the minimalist view is fundamentally flawed and (...) that a liberal view, according to which natural properties are instantiated at several or even at all levels of reality, should be preferred. Our argument proceeds by reviewing those core principles of Lewis‘s metaphysics that are most likely to constrain the size of the bearers of natural properties: the principle of Humean supervenience, the principle of recombination in modal realism, the hypothesis of gunk, and the thesis of composition as identity. (shrink)

Wittgenstein’s philosophy involves a general anti-platonism about properties or standards of similarity. On his view, what it is for one thing to have the same property as another is not dictated by reality itself; it depends on our classificatory practices and the standards of similarity they embody. Wittgenstein’s anti-platonism plays an important role in the private language sections and in his discussion of the conceptual problem of other minds. In sharp contrast to Wittgenstein’s views stands the contemporary doctrine of (...) natural properties, which holds that there is an objective hierarchy of naturalness amongst properties, a hierarchy that is completely independent of our concepts or practices. Some authors have appealed to the natural properties view to offer an explicitly anti-Wittgensteinian account of sensation concepts. The paper discusses these competing views of properties and sensation concepts. It is argued that, if our account of concepts of conscious states starts from a commitment to natural properties, we are bound to recognize that our actual classificatory practices also play a crucial role in determining which properties our concepts pick out. On the other hand, if we start from the anti-platonist position, we are bound to recognize that we also need a notion of sameness of property that extends beyond our limited capacity to recognize similarity or sameness of property. The correct view, it is concluded, must occupy a middle position between an extreme anti-realism about properties and an extreme version of the natural properties view. It is suggested that Wittgenstein’s own view does just that. (shrink)

The paper pinpoints certain unrecognized difficulties that surface for recombination and duplication in modal realism when we ask whether the following inter-world fixity claims hold true: 1) A property is perfectly natural in a world iff it is perfectly natural in every world where it is instantiated; 2) Something is mereologically atomic in a world iff all of its duplicates in every world are atomic. In connection to 1), the hypothesis of idlers prompts four variants of Lewis’s doctrine (...) of perfectly natural properties, all deemed unsatisfactory for the purposes of duplication and recombination. By means of 2), instead, we show that the principle of recombination does not countenance the atomicity or non-atomicity of duplicates; but it should, because it is genuinely possible that: a) something, which is atomic, is non-atomic; and b) something, which is non-atomic, is atomic. In discussing 1) and 2), the paper substantiates a tension in Lewis’s metaphysics between modal intuitions and the reliance on the natural sciences. (shrink)

The necessitarian solution to the problem of induction involves two claims: first, that necessary connections are justified by an inference to the best explanation; second, that the best theory of necessary connections entails the timeless uniformity of nature. In this paper, I defend the second claim. My arguments are based on considerations from the metaphysics of laws, properties, and fundamentality.

It is widely held that some properties are more natural than others and that, as David Lewis put it, “an adequate theory of properties is one that recognises an objective difference between natural and unnatural properties” (Lewis 1983, p. 347). The general line of thought is that such ‘elitism’ about properties is justified as it can give simple and elegant solutions to a number of old metaphysical and philosophical problems. My aim is to analyze (...) what these natural properties are: super-determinates or determinable (or maybe both) and argue that all three of these options would lead to serious difficulties for metaphysical elitism and would prevent natural properties from fulfilling their supposed grand explanatory role. (shrink)

David Lewis may be regarded as an antiessentialist. The reason is that he is said to believe that individuals do not have essential properties independent of the ways they are represented. According to him, indeed, the properties that are determined to be essential to individuals are a matter of which similarity relations among individuals are salient, and salience, in turn, is a contextual matter also determined to some extent by the ways individuals are represented. Todd Buras argues that (...) the acknowledgment of natural properties in counterpart theoretic ontology affects Lewis’s theory with regard to essentialism. Buras’s reasoning is appealing. He claims that, since natural properties determine the existence of similarity relations among individuals that are salient independent of context, Lewis can no longer be claimed to be an antiessentialist. The aim of this paper is to argue, against Buras, that if counterpart theory was antiessentialist before natural properties were taken into account, then it remains so afterwards. (shrink)

In this paper, I investigate how different views about the vertical and horizontal structure of reality affect the debate between reductive and nonreductive physicalism. This debate is commonly assumed to hinge on whether there are high-level, special-science properties that are distinct from low-level physical properties and whether the alleged multiple realizability of high-level properties establishes this. I defend a metaphysical interpretation of nonreductive physicalismin the absence of both of these assumptions. Adopting an independently motivated, discipline-relative account of (...) natural properties and appealing to a phenomenon I call “multiple determinativity,” in which a single physical property simultaneously realizes different kinds of special-science properties, is sufficient to show that some special-science properties are irreducible to physical properties and that nonreductive physicalism is not merely a terminological variant of reductive physicalism. (shrink)

David Lewis advised essentialists to judge his counterpart theory a false friend. He also argued that counterpart theory needs natural properties. This essay argues that natural properties are all essentialists need to find a true friend in counterpart theory. Section one explains why Lewis takes counterpart theory to be anti-essentialist and why he thinks it needs natural properties. Section two establishes the connection between the natural properties counterpart theory needs and the essentialist (...) consequences Lewis disavows. Section three answers two objections: the first attempts to block the consequences of adding natural properties to counterpart theory; the second grants the consequences, but denies that they amount to essentialism. –Correspondence to: [email protected]. (shrink)

Natural Property Rights presents a novel theory of property based on individual, pre-political rights. The book argues that a just system of property protects people's rights to use resources and also orders those rights consistent with natural law and the public welfare. Drawing on influential property theorists such as Grotius, Locke, Blackstone, and early American statesmen and judges, as well as recent work in in normative and analytical philosophy, the book shows how natural rights guide political and (...) legal reasoning about property law. It examines how natural rights justify the most familiar institutions in property, including public property, ownership, the system of estates and future interests, leases, servitudes, mortgages, police regulation, and eminent domain. Thought-provoking and comprehensive, the book challenges leading contemporary justifications for property and shows how property both secures individual freedom and serves the common good. (shrink)

I call anti-resemblism the thesis that independently of any contextual specification there is no determinate fact of the matter about the comparative overall similarity of things. Anti-resemblism plays crucial roles in the philosophy of David Lewis. For instance, Lewis has argued that his counterpart theory is anti-essentialist on the grounds that counterpart relations are relations of comparative overall similarity and that anti-resemblism is true. After Lewis committed himself to a form of realism about natural properties he maintained that (...) anti-resemblism is true about the relations of overall similarity that enter his counterpart theory and his analysis of counterfactuals. However, in this article I argue that Lewis’s account of degrees of naturalness for properties combined with his modal realism entails that anti-resemblism is false. The Lewisian must amend Lewis’s system if she aims to benefit from the alleged virtues of anti-resemblism. I consider two ways of amending it, neither of which is a free lunch. (shrink)

For classical liberals, natural property rights are the moral foundation of the market and of individual freedom. They determine the initial position from which persons legitimately make contracts and assess the validity of collective action. Since they establish the initial conditions of legitimate agreements, they cannot be dependent upon agreements. Persons possess these rights apart from social institutions. Natural rights typically not only prohibit interference with a person's body and mind but also forbid interference with a person's appropriation (...) of unowned natural resources and with his freedom to do as he chooses with the products that he makes from them, so long as he does not infringe upon the equal rights of others. These rights prescribe, as Locke put it, that persons be free “to order their Actions, and dispose of their Possessions, and Persons as they think fit … without asking leave, or depending upon the Will of any other Man”. (shrink)

For classical liberals, natural property rights are the moral foundation of the market and of individual freedom. They determine the initial position from which persons legitimately make contracts and assess the validity of collective action. Since they establish the initial conditions of legitimate agreements, they cannot be dependent upon agreements. Persons possess these rights apart from social institutions. Natural rights typically not only prohibit interference with a person's body and mind but also forbid interference with a person's appropriation (...) of unowned natural resources and with his freedom to do as he chooses with the products that he makes from them, so long as he does not infringe upon the equal rights of others. These rights prescribe, as Locke put it, that persons be free “to order their Actions, and dispose of their Possessions, and Persons as they think fit … without asking leave, or depending upon the Will of any other Man”. (shrink)

Various criteria for the natural/non-natural distinction have been suggested in metaethics. Shafer-Landau first claimed that natural properties are properties that are used in scientific disciplines. But firstly, this definition is not comprehensive, and secondly it is ambiguous; according to the second criterion, two lists must be prepared; the first list includes terms that most people consider to be natural. The terms that are not included in the first list, are transferred to the list of (...) non-natural terms. I argue, however, that this criterion also does not help in distinguishing natural properties from non-natural ones. If we wish to maintain Shafer-Landau’s view, we can find a criterion for natural properties using normative ethics. For example, by accepting Kant’s principle of humanity as a non-natural reality, those descriptive properties that follow from this principle can be the foundational properties for moral properties. But by presenting a serious criticism on Shafer-Landau’s metaethics and accepting views that are invulnerable to this critique, a criterion for the distinction of natural/non-natural in meta-ethics can be found. One of these views is Fitzpatrick’s view, according to which many of the aspects of the world that are empirically investigable are also inherently value-laden. Therefore, the world of human experience is a dual-aspect world. One of these aspects is natural and the other is non-natural. (shrink)

This chapter discusses the distinction between natural kinds and natural properties. Some theorists deny the distinction, and claim that natural kinds can be identified with properties. For example, natural kinds might be understood as the perfectly natural properties, reducible to properties or the extensions of properties. Alternatively, one might argue that natural kinds and natural properties are distinct and that natural kinds could be considered as a (...) sui generis type of entity. For example, one might hold that natural kinds require a distinct kind of universal, substantival universal, or sortal. Alternatively, one might claim that properties themselves form natural kind groupings, in virtue of causal mechanisms. This chapter argues that classification into natural kinds can reflect real differences between natural groups, without the supplementary ontological distinction between properties and kinds. -/- . (shrink)

The claim that ordinary ethical discourse is typically true and that ethical facts are typically knowable seems in tension with the claim that ordinary ethical discourse is about features of reality friendly to a scientific worldview. Cornell Realism attempts to dispel this tension by claiming that ordinary ethical discourse is, in fact, discourse about the same kinds of things that scientific discourse is about: natural properties. We offer two novel arguments in reply. First, we identify a key assumption (...) that we find unlikely to be true. Second, we identify two features of typical natural properties that ethical properties lack. We conclude that Cornell Realism falls short of dispelling the tension between ethical conservativism and ethical naturalism. (shrink)

I consider Lewis’ appeal to naturalness to solve Kripke ’s rule - following paradox. I then present a different interpretation of this paradox and offer reasons for thinking that this is what Kripke had in mind. I argue that Lewis’ proposal cannot provide a solution to this version of paradox.

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This paper addresses a famous objection against David Lewis’s Best System Analysis (BSA) of laws of nature. The objection—anticipated and discussed by Lewis (1994)—focuses on the standards of simplicity and strength being (in part) a matter of psychology. Lewis’s answer to the objection relies on his metaphysics of natural properties and its ability to single out the robustly best system, a system that is expected to come out far ahead of its rivals under any standard of simplicity and (...) strength. The main task of this paper is to argue that Lewis’s reply to the objection in terms of nature being kind to us does not succeed, if nature’s kindness is understood in terms of the naturalness of the properties composing the Humean mosaic. For epistemic access to natural properties is downstream to any previous identification of the best system. A possible Lewisian rejoinder in terms of a cross-world Humean mosaic of natural properties is considered and rebutted. The paper concludes by suggesting that Lewis could instead avail himself of a better answer to the objection, if the standards of simplicity and strength were reinterpreted along perspectivalist lines. (shrink)

I explore the Because Constraint—the idea that moral facts depend on natural facts and that moral judgements ought to respect the dependence of moral facts on natural facts. I consider several issues concerning its clarification and importance.

According to cognitive non-naturalism, normative judgments are standard beliefs that purport to be about non-natural properties. An influential plurality of normative theorists, including non-naturalist realists, error theorists and skeptics, share this view. But it is mistaken. For it predicts an epistemic profile for normative judgments that they do not have. In particular, they are not disposed to extinguish in light of accepted evidence that the any non-natural properties are absent, and they are not disposed to come (...) into existence in light of accepted evidence for any non-natural property. So normative judgments might be beliefs, and there might be non-natural properties, but normative judgments are not beliefs about non-natural properties. (shrink)

In Principia Ethica Moore held that the meaning of the word ‘good’ is a simple, unanalysable, non-natural property. Several features of this claim might be questioned. It might be questioned whether there are properties at all, and whether, even if there are, they are ever the meanings of words. Again, it might be questioned whether the word ‘good’ expresses a property, even assuming that some other words do. Moore considers this latter question, but not the former . The (...) two questions may seem connected by the fact that a negative answer to the first trivially leads to a negative answer for the second. But this triviality should be a caution to us. Otherwise we may confuse nominalism with ethical non-cognitivism or ‘anti-realism’. (shrink)

Many normative nonnaturalists find normative naturalism to be completely implausible. Naturalists and nonnaturalists agree, provided they are realists, that there are normative properties, such as moral ones. Naturalists hold that these properties are similar in all metaphysically important respects to properties that all would agree to be natural ones, such as such as meteorological or economic ones. It is this view that the nonnaturalists I have in mind find to be hopeless. They hold that normative (...) class='Hi'>properties are just too different from natural properties for it to be possible they are natural properties. I aim to defuse this intuition. “Non-analytic naturalism” has made progress in defusing the intution. According to non-analytic naturalists, normative properties can be represented in thought in two ways, by an ordinary normative concept and by a naturalistic concept, where, the non-analytic naturalist concedes, normative concepts are not, and are not analyzable in terms of, naturalistic concepts. Non-analytic naturalism seems to avoid many of the standard objections to naturalism, but the Just Too Different intuition is resilient in the face of non-analytic naturalism, for even if one thinks that normative concepts are not analyzable at all, one might think that clarity about the concepts can show that naturalism is hopeless. I therefore think it is important for naturalists to address the intuition directly. In this paper, I argue that the intuition plausibly rests on certain characteristic pre-theoretical ways of thinking of the normative properties that we acquire in the ordinary course of moral learning, together with a drive to vindicate these ways of thinking, something of which people may be unaware. This drive to vindicate our ways of thinking is pervasive, and it is characteristic of rational agents. It explains our tendency to think well of those we love, for example, and to think ill of those with whom we are angry. It also explains a strong inclination to form beliefs that, if true, would seemingly vindicate our ways of thinking of normative properties. A result of this, I contend, is the intuition that normative naturalism cannot be true. Yet, as I further argue, the vindication process does not track the truth and the drive to vindicate our states of mind cannot be relied on as a guide to the metaphysics of normativity. (shrink)

Many normative nonnaturalists find normative naturalism to be completely implausible. Naturalists and nonnaturalists agree, provided they are realists, that there are normative properties, such as moral ones. Naturalists hold that these properties are similar in all metaphysically important respects to properties that all would agree to be natural ones, such as such as meteorological or economic ones. It is this view that the nonnaturalists I have in mind find to be hopeless. They hold that normative (...) class='Hi'>properties are just too different from natural properties for it to be possible they are natural properties. I aim to defuse this intuition. “Non-analytic naturalism” has made progress in defusing the intution. According to non-analytic naturalists, normative properties can be represented in thought in two ways, by an ordinary normative concept and by a naturalistic concept, where, the non-analytic naturalist concedes, normative concepts are not, and are not analyzable in terms of, naturalistic concepts. Non-analytic naturalism seems to avoid many of the standard objections to naturalism, but the Just Too Different intuition is resilient in the face of non-analytic naturalism, for even if one thinks that normative concepts are not analyzable at all, one might think that clarity about the concepts can show that naturalism is hopeless. I therefore think it is important for naturalists to address the intuition directly. In this paper, I argue that the intuition plausibly rests on certain characteristic pre-theoretical ways of thinking of the normative properties that we acquire in the ordinary course of moral learning, together with a drive to vindicate these ways of thinking, something of which people may be unaware. This drive to vindicate our ways of thinking is pervasive, and it is characteristic of rational agents. It explains our tendency to think well of those we love, for example, and to think ill of those with whom we are angry. It also explains a strong inclination to form beliefs that, if true, would seemingly vindicate our ways of thinking of normative properties. A result of this, I contend, is the intuition that normative naturalism cannot be true. Yet, as I further argue, the vindication process does not track the truth and the drive to vindicate our states of mind cannot be relied on as a guide to the metaphysics of normativity. (shrink)

This investigation of time and space is motivated by gaps in our current understanding: by the lack of definitions, by our failure to appreciate the nature of these entities, by our inability to pin down their properties. The author's approach is based on two key ideas: The first idea is to seek the geo-historical origins of time and space concepts. A thorough investigation of a diversified archaeological corpus, allows him to draft coherent definitions; it furthermore gives clues as to (...) whether time and space were discovered or invented. The second idea is to define the units before trying to define space and time. The results presented here are unexpected: Time and space were not discovered in nature, but they were invented; time is not a phenomenon and space has no materiality; they are only concepts. This runs contrary to the opinion of most scientific and the philosophical authorities, although one would seek in vain for a theoretical validation of the conventional position. This book will provide much food for thought for philosophers and scientists, as well as interested general readers. (shrink)

This paper attacks two contrary views. One denies that nature has joints, taking the properties we call natural to be merely artefacts of our theories. The other accepts real natural properties but takes their naturalness to come by degrees. I argue that both are wrong: natural properties are real, and their naturalness no more comes by degrees than does the naturalness of the things that havethem.

First, we shall consider the distinction as set forth in Principia. Next, on the basis of what Moore says there, a view as to the nature of universals will be attributed to him. This view will provide the ground for a radical distinction between natural and non-natural properties. But it will not quite jibe with other things he says at a slightly later period. Nor will it be clear why he holds to such a view of universals. (...) Finally we shall consider a very early paper of Moore's, written just prior to Principia. An analysis of this paper will reveal a rather strange and complex ontology implicit in it. This, in turn, will show the source of the ontology of Principia; why the ontology attributed to him in Principia does not jibe with other things he says; and the origin of the notion of non-natural properties. (shrink)

This paper attacks two contrary views. One denies that nature has joints, taking the properties we call natural to be merely artefacts of our theories. The other accepts real natural properties but takes their naturalness to come by degrees. I argue that both are wrong: natural properties are real, and their naturalness no more comes by degrees than does the naturalness of the things that have them.1.

In this book, Buckle provides a historical perspective on the political philosophies of Locke and Hume, arguing that there are continuities in the development of seventeenth and eighteenth-century political theory which have often gone unrecognized. He begins with a detailed exposition of Grotius's and Pufendorf's modern natural law theory, focussing on their accounts of the nature of natural law, human sociability, the development of forms of property, and the question of slavery. He then shows that Locke's political theory (...) takes up and develops these basic themes of natural law. The author argues further that, rather than being a departure from this tradition, the moral sense theory of Hutcheson and Hume represents a not entirely successful attempt to underpin the natural law theory with an adequate moral psychology. (shrink)

Professional philosophers and advanced students working in metaphysics and the philosophy of science will find this book both provocative and stimulating.

No natural rights theory justifies strong intellectual property rights. More specifically, no theory within the entire domain of natural rights thinking – encompassing classical liberalism, libertarianism and left-libertarianism, in all their innumerable variants – coherently supports strengthening current intellectual property rights. Despite their many important differences, all these natural rights theories endorse some set of members of a common family of basic ethical precepts. These commitments include non-interference, fairness, non-worsening, consistency, universalisability, prior consent, self-ownership, self-governance, and the (...) establishment of zones of autonomy. Such commitments have clear applications pertaining to the use and ownership of created ideas. I argue that each of these commitments require intellectual property rights to be substantially limited in scope, strength and duration. In this way the core mechanisms of natural rights thinking ensure a robust public domain and categorically rule out strong intellectual property rights. (shrink)

The paper argues that members of future generations have an entitlement to natural resources equal to ours. Therefore, if a currently living individual destroys or degrades natural resources then he must pay compensation to members of future generations. This compensation takes the form of “primary goods” which will be valued by members of future generations as equally useful for promoting the good life as the natural resources they have been deprived of. As a result of this policy, (...) each generation inherits a “Commonwealth” of natural resources plus compensation. It is this inherited “Commonwealth” which members of that generation must then pass on to members of the next generation. Once this picture is accepted, the standard bundle of property rights is problematic, for it takes the owner of a constituent of the Commonwealth to have the right to “waste, destroy or modify” that item at will. This paper therefore presents a revised set of property rights which takes seriously the idea that each generation has an equal claim on the resources that nature has bequeathed us, whilst allowing certain effects on those natural resources by each generation, and a degree of exclusive use of those natural resources owned by an individual. (shrink)

Fundamental properties and the laws of nature go hand in hand: mass and gravitation, charge and electromagnetism, spin and quantum mechanics. So, it is unsurprising that one's account of fundamental properties affects one's view of the laws of nature and vice versa. In this essay, I will survey a variety of recent attempts to provide a joint account of the fundamental properties and the laws of nature. Many of these accounts are new and unexplored. Some of them (...) posit surprising entities, such as counterfacts. Other accounts posit surprising laws of nature, such as instantaneous laws that constrain the initial configuration of particles. These exciting developments challenge our assumptions about our basic ontology and provide fertile ground for further exploration. (shrink)