This paper offers a new approach to an old debate about superaddition in Locke. Did Locke claim that some objects have powers that are unrelated to their natures or real essences? The question has split commentators. Some (Wilson, Stuart, Langton) claim the answer is yes and others (Ayers, Downing, Ott) claim the answer is no. This paper argues that both of these positions may be mistaken. I show that Locke embraced a robust epistemic humility. This epistemic humility includes ignorance of (...) the real essences of bodies, of the causal processes underlying the production of natural phenomena, and of God’s method of creation. I show how this epistemic humility offers strong support for an agnostic response to the question of superaddition. Locke did not intend to claim that bodies either do or do not have properties unrelated to their real essences. Instead, his primary goal in discussing the topic was to emphasize the strict limits to human knowledge. (shrink)

Peter Anstey presents a thorough and innovative study of John Locke's views on the method and content of natural philosophy. Focusing on Locke's Essay concerning Human Understanding, but also drawing extensively from his other writings and manuscript remains, Anstey argues that Locke was an advocate of the Experimental Philosophy: the new approach to natural philosophy championed by Robert Boyle and the early Royal Society who were opposed to speculative philosophy. On the question of method, Anstey shows how Locke's pessimism about (...) the prospects for a demonstrative science of nature led him, in the Essay, to promote Francis Bacon's method of natural history, and to downplay the value of hypotheses and analogical reasoning in science. But, according to Anstey, Locke never abandoned the ideal of a demonstrative natural philosophy, for he believed that if we could discover the primary qualities of the tiny corpuscles that constitute material bodies, we could then establish a kind of corpuscular metric that would allow us a genuine science of nature. It was only after the publication of the Essay, however, that Locke came to realize that Newton's Principia provided a model for the role of demonstrative reasoning in science based on principles established upon observation, and this led him to make significant revisions to his views in the 1690s. On the content of Locke's natural philosophy, it is argued that even though Locke adhered to the Experimental Philosophy, he was not averse to speculation about the corpuscular nature of matter. Anstey takes us into new terrain and new interpretations of Locke's thought in his explorations of his mercurialist transmutational chymistry, his theory of generation by seminal principles, and his conventionalism about species. (shrink)

When I classify Fluffy as a cat, I appear to do so out of an appreciation of a prior metaphysical fact, namely, that she has a nature or essence common to creatures we classify as cats. Locke turns this picture on its head. Our actual practices of naming and sorting individuals into kinds proceed according to ideas in the mind. As Locke puts it, species (kinds) are ‘the Workmanship of the Understanding,’ not the workmanship of nature, because their essences consist (...) in abstract ideas, or ‘nominal essences,’ we make. Many take Locke to mean that the observable similarities and differences between things leave it undetermined how we are to group and distinguish them, so that classification is, and must be, a matter of convention. And while Locke never denies that individuals have real essences, it is argued that knowledge of them would not reveal natural boundaries, either. On this influential reading, nature does not draw boundaries between kinds, and she makes this fact apparent to us. I argue that Locke’s claim that nature does not determine the ‘Boundaries of the Species of Things’ should be understood as the claim that nature does not draw the variable boundaries set out in the nominal essences we make. Differences in our nominal essences reflect differences in speakers’ knowledge of external ‘standards,’ which we latch on to by way of their ‘leading’ qualities, which present the mind with a limited number of unique and highly salient bases for classification. On my reading, nature may very well draw boundaries of her own. (shrink)

"John Locke is considered as one of the most important philosophers of the modern era. The Declaration of Independence and the United States Constitution were both highly influenced by Locke's philosophical ideas. Commonly known as the 'Father of Liberalism' Locke heavily influences contemporary libertarianism, with its emphasis on small government, the requirement of actual consent to that government, and a natural executive right to establish one's own sovereignty and enforce one'' own rights. The Lockean Mind provides a comprehensive survey of (...) his work, not only placing it in its historical context but also exploring its contemporary significance. Comprising almost sixty chapters by a superb team of international contributors, the volume is divided into twelve parts covering the full range of Locke's thought: Historical Background, Locke's Interlocutors, Locke's Epistemology, Locke's Philosophy of Mind, Locke on Philosophy of Language and Logic, Locke's Metaphysics, Locke's Natural Philosophy, Locke's Moral Philosophy, Locke on Education, Locke's Political Philosophy, Locke's Social Philosophy, Locke on Religion. This collection is essential reading for students and researchers working in political philosophy, philosophy of mind, libertarianism, British Empiricism, epistemology and political theory, as well as for those in related Humanities and Social Sciences disciplines with an interest in John Locke"--. (shrink)

Genesis suggests that God is the creator of kinds. Kinds as Locke understands them are what are nowadays called "social constructions". They are social constructions because the boundaries between them reflect our interests, perspectives, and desires, but in Locke's view those boundaries are not altogether arbitrary, because they also reflect natural or God‐given similarities among things. This chapter looks more closely at the story of creation, and explains how, in John Locke's view, kinds in particular, those kinds whose members Locke (...) calls "substances", come to be. It further comments on the simplicity and explanatory strength of Locke's story. In spite of its strengths, Locke's view is open to many objections and attended by many complications, one of which is considered here. One objection is that the story of creation pays only glancing attention to entities that must exist in order for the story to be true. (shrink)

Jean-Michel Vienne; IX*—Locke on Real Essence and Internal Constitution1, Proceedings of the Aristotelian Society, Volume 93, Issue 1, 1 June 1993, Pages 139–15.

This chapter contains sections titled: References.

Locke claimed that God superadded various powers to matter, including motion, the perfections of peach trees and elephants, gravity, and that he could superadd thought. Various interpreters have discussed the question whether Locke's claims about superaddition are in tension with his commitment to mechanistic explanation. This literature assumes that for Locke mechanistic explanation involves deducibility. We argue that this is an inaccurate interpretation and that mechanistic explanation involves a different type of intelligibility for Locke.

Annotation In this book Mr. Mackie selects for critical discussion six related topic which are prominent in John Locke's Essay concerning Human Understanding: ...

‘Water is H2O’ is one of the most frequently cited sentences in analytic philosophy, thanks to the seminal work of Saul Kripke and Hilary Putnam in the 1970s on the semantics of natural kind terms. Both of these philosophers owe an intellectual debt to the empiricist metaphysics of John Locke's Essay Concerning Human Understanding, while disagreeing profoundly with Locke about the reality of natural kinds. Locke employs an intriguing example involving water to support his view that kinds (or ‘species’), such (...) as water and gold, are the workmanship of the human mind. This is the point of his story about a winter visitor to England from Jamaica, who is astonished to find that the water in his basin has turned solid overnight, and proceeds to call it ‘hardened water’. Locke criticizes this judgement, maintaining that it is more consonant with common sense to regard water and ice as different kinds of substance. Putnam, by implication, disagrees. Deploying his imaginary example of Twin Earth—a distant planet where a watery-looking substance, XYZ, rather than H2O, fills the oceans and rivers—he maintains that common sense supports the judgement that XYZ and H2O, despite their superficial similarity, are not the same kind of substance, precisely because their molecular compositions are different. Here it will be argued that both views are mistaken, but that, in this dispute, Locke has more right on his side than his modern opponents do. (shrink)

In this paper, I examine the crucial relationship between Locke’s theory of individuation and his theory of kinds. Locke holds that two material objects—e.g., a mass of matter and an oak tree—can be in the same place at the same time, provided that they are ‘of different kinds’. According to Locke, kinds are nominal essences, that is, general abstract ideas based on objective similarities between particular individuals. I argue that Locke’s view on coinciding material objects is incompatible with his view (...) on kinds. In order for two material objects to be in the same place at the same time, they must differ with respect to at least one nominal essence. However, Locke thinks that it is impossible that x and y have the same real essence but differ with respect to any nominal essence; and coinciding material objects have the same real essence. Therefore, Locke cannot hold what he in fact holds, namely that distinct material objects can be in the same place at the same time. (shrink)

While the tradition of Locke scholarship holds that both Locke and Boyle are species anti-realists, there is evidence that this interpretation is false. Specifically, there has been some recent work on Boyle showing that he is, unlike Locke, a species realist. In this paper I argue that once we see Boyle as a realist about natural species, it is plausible to read some of Locke’s most formidable anti-realist arguments as directed specifically at Boyle’s account of natural species. This is a (...) break from the tradition because no one in the literature has yet suggested that some of Locke’s arguments in Book III of the Essay include a criticism of Boyle’s doctrine of species. Moreover, identifying Boyle as Locke’s intended target illuminates some of the more vexing passages in the Essay concerning real essences. (shrink)

In this paper I criticize the interpretations of John Locke on natural kinds offered by Matthew Stuart and Pauline Phemister who argue that Locke’s Essay Concerning Human Understanding allows for natural kinds based on similar real essences. By contrast, I argue for a conventionalist reading of Locke by reinterpreting his account of the status of real essences within the Essay and arguing that Locke denies that the new science of mechanism can justify the claim that similarities in corpuscular structure imply (...) similarities in sensible qualities. I argue further that Locke rejects as meaningless any talk of kinds that appeals to similarities among real essences. On my reading of Locke, similarities in real essences are not only irrelevant to species, but natural kind theories based on themare unintelligible. (shrink)

John Locke has a good claim to the title of the greatest ever English philosopher, and was a founding father of both the empiricist tradition in philosophy and the liberal tradition in politics. This new book provides an accessible introduction to Locke’s thought. Although its primary focus is on the Essay Concerning Human Understanding, it also discusses the Two Treatises on Government, the Essay on Toleration, and the Reasonableness of Christianity, and draws on materials from Locke’s correspondence and notebooks to (...) shed light on the contexts of these major works. Locke’s arguments for his central claims are subjected to close scrutiny, and his replies to his main critics evaluated. A.J. Pyle takes as his guiding theme Locke’s own maxim, that God has given humans enough knowledge for our needs. The philosopher who emerges from these pages is a strikingly modern figure, anti-metaphysical in his attitude both to science and to theology, anti-authoritarian in his politics, and cautiously optimistic about human progress. Locke is indeed one of the founding figures of the Enlightenment, but for Pyle the Lockean Enlightenment is a modest affair of slow and hesitant groping towards the light. As well as serving as an introduction to Locke for students, the book also helps to correct a number of significant errors and misunderstandings that have marred our understanding of Locke and will spark discussion and debate amongst scholars of his work. (shrink)

This collection of 28 original essays examines the diverse scope of John Locke’s contributions as a celebrated philosopher, empiricist, and father of modern political theory. Explores the impact of Locke’s thought and writing across a range of fields including epistemology, metaphysics, philosophy of science, political theory, education, religion, and economics Delves into the most important Lockean topics, such as innate ideas, perception, natural kinds, free will, natural rights, religious toleration, and political liberalism Identifies the political, philosophical, and religious contexts in (...) which Locke’s views developed, with perspectives from today’s leading philosophers and scholars Offers an unprecedented reference of Locke’s contributions and his continued influence. (shrink)

This book is a general introduction to the philosophy of John Locke, one of the most influential thinkers in modern times. Nicholas Jolley aims to show the fundamental unity of Locke's thought in his masterpiece, the Essay Concerning Human Understanding. In this work Locke advances a coherent theory of knowledge; as against Descartes he argues that knowledge is possible to the extent that it concerns essences which are constructions of the human mind.

This book is available either individually, or as part of the specially-priced Arguments of the Philosphers Collection.

This collection of new essays on John Locke's philosophy provides the most up-to-date entrée into the exciting developments taking place in the study of one of the most important contributors to modern thought. Covering Locke's natural philosophy, his political and moral thought and his philosophy of religion, this book brings together the pioneering work of some of the world's leading Locke scholars.

When the New Organon appeared in 1620, part of a six-part programme of scientific inquiry entitled 'The Great Renewal of Learning', Francis Bacon was at the high point of his political career, and his ambitious work was groundbreaking in its attempt to give formal philosophical shape to a new and rapidly emerging experimentally-based science. Bacon combines theoretical scientific epistemology with examples from applied science, examining phenomena as various as magnetism, gravity, and the ebb and flow of the tides, and anticipating (...) later experimental work by Robert Boyle and others. His work challenges the entire edifice of the philosophy and learning of his time, and has left its mark on all subsequent philosophical discussions of scientific method. This volume presents a new translation of the text into modern English by Michael Silverthorne, and an introduction by Lisa Jardine that sets the work in the context of Bacon's scientific and philosophical activities. (shrink)

Talk of “essences” has, since Saul Kripke and Hilary Putnam, gained significant currency in contemporary philosophy. It is no longer unfashionable to talk about the essence of this or that (natural) kind, and as such we now find a variety of brands of essentialism on the market including B.D. Ellis’s scientific essentialism, David Oderberg’s real Essentialism, Alexander Bird’s dispositional essentialism, and the contemporary essentialism of Kripke and Putnam. -/- Almost all these brands of essentialism share a particular gloss on Locke’s (...) famous objection to Aristotle that natural kinds are demarcated by nominal essences not real essences. Thus Oderberg claims that ‘Empiricists take [real] essences to be paradigmatically unobservable’ and that this ‘objection goes back at least to John Locke’ (Oderberg 2007: 21). Bird, presenting his dispositional essentialism, defines a notion of “being” as ‘the reverse of Locke’s definition of essence’ which he takes to be ‘the being of any thing, whereby it is what it is’ (Bird 2007: 100). Joseph LaPorte, discussing nominal and real essences, claims that ‘Kripke and Putnam seem to affirm something more substantive: that biological kinds have “real essences” in Locke’s terminology’ (LaPorte 2004: 49). Even avowed anti-essentialists such as John Dupré sanction the standard criticism of Locke that his scepticism about the knowability of real essences was ‘premature’, and claim that ‘genuine natural kinds provide the extensions of many terms of natural language, where these natural kinds are determined by true Lockean real essences’ (Dupré 1993: 22). -/- All of these essentialisms (even Dupré’s anti-essentialism) are wrong about Locke. Oderberg is wrong to claim that Locke thought that real essences were paradigmatically unobservable; Bird is wrong to think that Locke’s notion of essence is the being of anything whereby it is what it is; LaPorte is wrong to think that Kripke and Putnam are talking about Lockean real essences (although so are Kripke and Putnam); and Dupré is wrong to think that genuine natural kinds (if by genuine he means objective or mind-independent) are determined but true Lockean real essences . -/- The mistake stems from a standard, but ultimately incorrect, interpretation of Locke’s discussion of essences in An Essay Concerning Human Understanding . This mistaken interpretation (Lowe 1995, 2006, Von Leyden 1973, Wiggins 1974) takes Locke to mean, by “real essence”, the Aristotelian notion i.e. ‘the very being of anything, whereby it is what it is’ (Essay III.iii.15), and interprets his objection as epistemological: we cannot come to know what real essences are, and therefore they cannot figure in our classifications of things into kinds. -/- This paper will present and defend the following two claims: i) that Locke’s notion of “real essence” is not the Aristotelian notion, and ii) that Locke’s objection to the Aristotelian notion was not merely epistemological. The first claim can be defended by presenting and applying Vienne’s (1993) terminological revision. Vienne argues that Locke did not introduce a dichotomy between real and nominal essence, but a trichotomy between real essence, nominal essence and real constitution. This terminological revision will be employed to highlight where ambiguous uses of the phrase “real essence” have caused some serious misunderstandings of Locke’s philosophy. The second claim (steering Locke around what is the classic objection to his thesis) can be defended by presenting a novel way of splitting up Locke’s objections to the Aristotelian notion of essence. The analysis will show that Locke’s anti-essentialism is still in good shape, and of contemporary significance. (shrink)

It is often claimed that classification, on Locke’s view, proceeds by attending to similarities between things, and it is widely argued that nothing about the sensible similarities between things determines how we are to sort them, in which case sorting substances at the phenomenal level must be arbitrary. However, acquaintance with the “internal” or hidden qualities of substances might yet reveal objective boundaries. Citing what I refer to as the Watch passage in Locke’s Essay (henceforth Watches), many commentators claim that (...) classification at the microphysical level must also be arbitrary. They conclude that sorting is arbitrary at any level of description. I refer to this as the standard reading of Locke on classification. In this paper I argue that Locke does not claim that sorting is arbitrary, either at the phenomenal level, or at the microphysical level. First, Locke does not claim in Watches that sorting is arbitrary at the microphysical level. The existence or nonexistence of objective boundaries at the microphysical level is not Watches’ topic and the passage is in fact silent on that question. Here, the standard reading mistakes a claim about the nature of the task of locating “specific differences” for a claim about the nature of the task of classification. This diagnosis proves instructive, for I argue that a similar conflation underwrites the standard reading’s claim that sorting at the phenomenal level must be arbitrary. Far from arbitrarily choosing how to sort things in terms of their phenomenal similarities, Locke thought that the mind simply follows nature’s lead. This characterization of the mind’s activity, I go on to argue, accords well with Locke’s claim that species are the workmanship of the understanding. (shrink)