An intelligently and originally organized survey, which cites with brief abstracts and some appraisals studies of Plato that appeared during the period 1950-1957. The range of coverage is almost exhaustive and is carefully cross-referenced. The citation of material in Dutch, Portuguese, and Norwegian, supplementing complete coverage of English, French, German, and Italian books and articles, should prove of value in revealing common interests and furthering international communication among scholars. Philological and analytic approaches are usually commended, but dialectical treatments which fit (...) neither category usually elicit an unjustified negative appraisal. An indispensable book for the general practitioner in philosophy as well as for the specialist. --R. S. B. (shrink)

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be (...) preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Mcguiness finds in the early wittgenstein a metaphysics similar to\nthat of nature mysticism. he discusses the relation between this\nkind of mysticism and wittgenstein's views on logic, ethics, aesthetics,\noptimism, solipsism, and 'living in the present.' he suggests that\nwittgenstein may have had some kind of mystical experience which\ninfluenced his early philosophy. (staff).

Constitutional and judicial law-making is increasingly beginning to find its reflection not only in the Anglo-Saxon, but also in the Romano-Germanic legal family. However, the prerequisites for the use of this legal instrument are different, which determines the relevance of conducting a comparative analysis regarding the provision of such a mechanism in the USA and Kazakhstan. The purpose of the research is to identify common and distinctive features in the process of implementation of constitutional and judicial law-making in countries belonging (...) to different legal systems. The article uses the methods of analysis, synthesis, comparison, deduction and generalization. As a result, the specificity of ensuring the mechanism of constitutional law-making in the USA was expressed, taking into account various forms of law-making activity. It has been established that the development of constitutional provisions in the United States takes place with the help of the constitutional doctrines of the Supreme Court of the United States, which provide for the introduction of amendments to constitutional provisions without a formal procedure. As a result of the study of the experience of Kazakhstan, it was established that special priority was given to the role of precedent, in particular, the decision of the Supreme Court of the Republic of Kazakhstan. This is explained by the integrative nature of the Romano-Germanic legal system, which allows effective development of national legislation as a whole and its provisions. The obtained results can be used during the professional training of judges in the Republic of Kazakhstan. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Recovering One's Self from PsychosisA Philosophical AnalysisThe author reports no conflicts of interest.Rosanna Wannberg (2024) has given us a dense but helpful introduction to certain philosophical questions raised by the fact that many patients recovering from psychotic illnesses describe their recovery in terms of gaining or regaining a 'sense of self' and a 'sense of agency,' which often involves acceptance of the 'fact' of being mentally ill, for example, (...) of 'having schizophrenia.' She raises two important questions: How should we understand what is going on in these accounts? and What are the implications of these reports for our understanding of what it is to have a 'sense of self' or a 'sense of agency'—of 'subjectivity' generally—which might have, both, clinical and nonclinical implications?What does it mean to have a self or a sense of having one, agency or a sense of having it? One might think these are the possession or experience of something 'inner' such as feelings of confidence or assurance, perhaps having a kind of inner structure or a set of deeply held ideas which give us coherence, motivate us and justify our actions, and which we can know by 'looking inward,' in an introspective act which provides direct, privileged acquaintance.Yet Wittgenstein called this a dangerously misleading 'picture' which 'held us captive,' and needed always to be 'gotten rid of' (Wittgenstein, 1958). One way of seeing the problem is to consider that no inner 'object,' no thing inside us, can be, or give us a sense of having, a self or agency, because no mere thing (whether an experience of confidence, or having an inner structure) can have any meaning or provide any explanation. A thing (like a word on a page) is just a thing—inert, dead— and must be interpreted, that is used, before it can play a role in our 'forms of life' (Wittgenstein, 1958) including explaining our sense of self or agency.Semantic externalists (Burge, 1979; Putnam, 1975), have argued that even what is internal to our minds—like thoughts—have contents which are determined by experiences in the 'outside' world in which we have lived and learned: if our experiences in the world, they have shown, were different, then so, also, would be the contents of our thoughts. It has even been argued that internal mental experiences which appear to be purely phenomenological (such as an image or a thought-token, so-called narrow content) can only [End Page 67] be identified and thought about using concepts having references in the external world: there is, so it is claimed, no narrow content (Yli-Vakkuri and Hawthorne, 2018); or, if there is, it is of no explanatory use in psychology (Fodor, 1994).If this is the philosophical background from which Wannberg confronts first-person accounts of recovery from psychosis which include (re)gaining a sense of self or agency, and if this philosophy is right, what becomes of the accounts? How are they to be understood?To meet this challenge, Wannberg invokes an alternative account of self-possession and firstperson authority provided by Richard Moran (2001). Moran's position is that we find or possess ourselves when we find or hold beliefs about the world which we do not merely believe but endorse or avow, where to endorse or avow a belief about the world is to find and endorse reasons in the world, which support that belief. Thus, I can avow that it's raining if I can look outside and see that it is raining. This Moran calls the transparency condition. Endorsing or avowing both a belief and the external reasons for it gives the self what Moran refers to as authenticity and which also might be said to provide cohesion, consistency and intelligibility—plausibly, a 'sense of self.'The transparency condition also applies to beliefs that justify actions. We act intentionally when we can give good reasons for what we do (Anscombe, 1957; Moran, 2001) and we can give good reasons for what we do when we can identify facts in the world that support those reasons. Thus, the transparency condition can explain both a sense of self and a sense... (shrink)

The Deleuze and Guattari Dictionary is a comprehensive and accessible guide to the world of Gilles Deleuze and Felix Guattari, two of the most important and influential thinkers in twentieth-century European philosophy. Meticulously researched and extensively cross-referenced, this unique book covers all their major sole-authored and collaborative works, ideas and influences and provides a firm grounding in the central themes of Deleuze and Guattari's groundbreaking thought. Students and experts alike will discover a wealth of useful information, analysis and criticism. (...) A-Z entries include clear definitions of all the key terms used in Deleuze and Guattari's writings and detailed synopses of their key works. The Dictionary also includes entries on their major philosophical influences and key contemporaries, from Aristotle to Foucault. It covers everything that is essential to a sound understanding of Deleuze and Guattari's philosophy, offering clear and accessible explanations of often complex terminology. The Deleuze and Guattari Dictionary is the ideal resource for anyone reading or studying these seminal thinkers or Modern European Philosophy more generally. (shrink)

Containing essays on the nature and scope of rhetoric, as well as philosophical analyses of persuasion and argumentation, this book claims to deal with a "new field of philosophy" in which "the concepts of rhetoric and argumentation, including the rhetoric and argumentation of the philosopher himself, are subjected to philosophical scrutiny." Leaving aside the "newness" of such an endeavor, it is heartening to see new interest in the questions of rhetorical argument. Perhaps analytic philosophers should pay more attention to (...) the history of rhetoric and modern rhetoricians to the new developments in philosophy. This book is a first step in that direction.—B. P. H. (shrink)

A patient attempt to get the philological detail of Parmenides' poem precise, by an author who has the virtue of recognizing the inseparability of philosophical considerations and philological technique. The conclusion is offered that the Eleatics were dualists almost in a Platonic sense, but with no causal connection between "being " and phenomena; thus there is no contradiction between the two parts of Parmenides' poem, and a strong historical affinity between Eleaticism and Plato's dualism. There is not quite enough precision (...) nor imagination in the philosophical dimension proper to make this study entirely definitive; but it offers an interesting approach, with a suggestive outcome.--R. S. B. (shrink)

It has been known for many years that the matrix representation of the one-dimensional position-momentum commutator calculated with the position and momentum matrices in a finite basis is not proportional to the diagonal matrix, contrary to what one expects from the continuous-space commutator. This discrepancy has correctly been ascribed to the incompleteness of any finite basis, but without the details of exactly why this happens. Understanding why the discrepancy occurs requires calculating the position, momentum, and commutator matrix elements in the (...) continuous position basis, in which all are generalized functions. The reason for the discrepancy is revealed by replacing the generalized functions with sequences approaching them as their parameter approaches zero. Besides explaining the discrepancy in the discrete and continuous models, this investigation finds an unusual double-peaked sequence for the Dirac delta function. (shrink)

This book shows that Hauriou's positivist and pragmatic jurisprudence and social theory, as well as their application to the study of institutions, is satisfactorily supported by his idealistic philosophy. The nine chapters first locate Hauriou's influences, then situate his disciplinary methodologies within methodology in general. The central chapters concern each of the three methodologies in turn.

In Alfred Ayer's article, philosophy is sharply counterposed to science, is denied the status of a science. This is the leitmotif of his entire paper. Moreover, the defense of this conception is characteristic of many representatives of neopositivism who go along with Ayer. However, Ayer has certain distinctive ideas of his own, which require critical analysis. Fundamental among them is his acknowledgment of the extremely general character of the concepts and principles with which philosophy, as distinct from (...) the special sciences, operates. This universality which is the distinguishing characteristic of philosophy is then transformed into an argument against the recognition of philosophy as a science. In replying to Ayer we shall attempt to demonstrate that his acknowledgment by no means necessitates the elimination of philosophy from the list of the sciences, but merely emphasizes its distinctive, that is, its general character, in contrast to all other sciences, which are particular in nature. This is the theme of the present article. (shrink)

This paper examines the challenge that psychoanalytic theory cannot be refuted. It does so by considering the theory in its orthodox Freudian form, and in the main branches into which it can be divided ? the theory of Instincts, of Development, of Psychic Structure, of Mental Economics or Defence, and of Symptom Formation. The essential character of the generalizations and concepts of these branches will just be indicated; and we shall ask of each branch whether it is possible to refute (...) it. A considerable amount of scientific enquiry has been done into the concepts and generalizations of psychoanalysis. Relevant examples of these enquiries will be noted; and the question asked whether these scientific studies have in fact done anything to refute or support the various branches of psychoanalytic theory. The general upshot will be that the challenge is both important and a mistake. (shrink)

The topic of this dissertation is what thought must be like in order for the laws and generalizations of psychology to be true. I address a number of contemporary problems in the philosophy of mind concerning the nature and structure of concepts and the ontological status of mental content. Drawing on empirical work in psychology, I develop a number of new conceptual tools for theorizing about concepts, including a counterpart model of concepts' role in linguistic communication, and a deflationary (...) theory of concepts' formal features. I also suggest some new answers to old problems, arguing, for example, that content realism is not hostage to a naturalized semantics. This dissertation can, as a whole, be read as a sympathetic re-evaluation of the language of thought hypothesis (LOT). LOT claims that thoughts are sentences in a mental language of computation, and are composed of meaningful, atomic symbols—concepts—which are individuated entirely by their formal features. Each chapter either defends various components of LOT from recent criticism, or fills in gaps in the theory. I begin the dissertation by introducing the language of thought project, and motivating and explaining each of its central components. In chapter 2, I discuss a recent competitor to atomism—neo-empiricism—and argue that it fails to meet several key desiderata on theories of concepts, and defend atomism from similar charges. In chapter 3, I argue against a view common to both philosophy and psychology: that concepts must be shareable. If true, atomism is in jeopardy. I find shareability to be unmotivated, and suggest an alternative counterpart model of concepts that does a better job of explaining the things shareability was supposed to explain. Chapter 4 takes up the question of what formal features are and how mental symbols are individuated. I develop a reductive account, arguing that formal features are certain sorts of physical properties and symbol types are sets of these properties. I turn to the topic of content in chapter 5, and defend a very strong version of content realism against recent criticism. (shrink)

This chapter first surveys general issues in the epistemic internalism / externalism debate: what is the distinction, what motivates it, and what arguments can be given on both sides. -/- The second part of the chapter will examine the internalism / externalism debate as regards to the specific case of the epistemology of memory belief.

The eight relatively short papers in this volume were first presented at the International Institute of Philosophy Entretiens held at Helsinki in 1970. Four main topics are considered: the definition of knowledge, memory, Wittgenstein’s theory of knowledge, and evidence. Representing the first topic, B. A. O. Williams’ paper "Knowledge and Reasons" is chiefly directed toward examining the role of reasons in knowledge. His main thesis is that when speaking in general about knowledge, it is not necessary either that (...) "the knower be able to support or ground his true belief by reference to other propositions" or "that he be in any special state" concerning his belief. Yet it is necessary that, "given the truth of p, it is no accident that A believes p rather than not-p." The author is quick to indicate that this formula is highly schematic and, as an analysis of knowledge, insufficient. A. J. Ayer, as commentator on Williams’ paper, tends to concur with and further amplify a number of Williams’ ideas. However, he does take issue with Williams on two main points: his remarks on the possibility of "radically impersonal knowledge" and his formula that true belief should not be accidental. Concerning the latter, Ayer, while aware of the outline form of Williams’ argument, is "sceptical of its power to yield a precise formula which would differentiate between knowledge and true belief" in a satisfactory manner. (shrink)

The book is a collection of papers and aims to unify the questions of syntax and semantics of language, which are included in logic, philosophy and ontology of language. The leading motif of the presented selection of works is the differentiation between linguistic tokens (material, concrete objects) and linguistic types (ideal, abstract objects) following two philosophical trends: nominalism (concretism) and Platonizing version of realism. The opening article under the title “The Dual Ontological Nature of Language Signs and the Problem (...) of Their Mutual Relations” provides a broad introduction into the problem area connected with this differentiation, while the logic-formal characteristics of the distinction are framed in the work entitled “On the Type-Token Relationships” (Chapter 1). The basic part of the book deals with issues relating to syntax (Chapters 2-4) and semantics of language (Chapters 5-6), as well as pertaining to syntactic-semantic pragmatic questions (Chapters 7-13). Throughout the book, language, categorial language, is characterized syntactically as generated by classical categorial grammar (Chapter 2) and formalized on two opposing levels: as language of expression-tokens (level of tokens) and language of expression-types (level of types). The author’s considerations contained in Chapters 2 and 4 lead to the important philosophical conclusion that in formal-logical syntactic studies on language the assumption that expression-types constitute the primary language layer while expression-tokens make the secondary one, can be neglected; thus, this speaks in favour of the opposing standpoint—the concretistic one—in the ontology of language syntax. In the works “Meaning and Interpretations”, Parts I and II (Chapters 5 and 6), it is underlined, however, that such semantic concepts as: meaning, denotation and interpretation are defined on the types level, yet their formal definitions require making use of notions of the tokens level. The semantic notions introduced in the above-mentioned articles are also used in the following works of the present selection, under the titles: “Three Principles of Compositionality” and “On Metaknowledge and Truth” (Chapters 7 and 8). They formalize two principles of compositionality that are well known in the literature on the subject, deriving from Frege, i.e. those of meaning and of denotation; they are related to the syntactic principle of compositionality which was introduced by the author. All the three principles are, at the same time, three conditions of homomorphism of categorial language algebra into three kinds of non-standard models of language (one syntactic and two semantic ones: intensional and extensional), which allows introducing three definitions of truthfulness into these models. The next two works in the collection, entitled: “On Language Adequacy” and “What is the Sense in Logic and Philosophy of Language” (Chapters 9 and 10) concern adequacy of categorial language syntax along with its dual semantics: intensional and extensional, and categorial compatibility of any of its syntactic categories with two corresponding semantic categories: intensional and extensional, based on the compatibility the syntactic category of each language expression with the ontological category assigned to its denotatum. The well-known problem of categorial compatibility for first-order quantifiers finds its solution in the paper “Categories of First-Order Quantifiers” (Chapter 11). In the work “Logic and Ontology of Language” (Chapter 12), being in a sense a summary of the considerations presented in the preceding chapters of the book, language is treated as an ontological being, characterized in compliance with the logical conception of language proposed by Ajdukiewicz. Application—like throughout the book—of tools of classical logic and set theory has resulted in emergence of a general formal logical theory of syntax, semantics and pragmatics of language, which takes into account duality in the understanding of linguistic expressions as tokens (concretes) and types (abstract objects). In terms that take into account a functional approach to language itself, there comes out an ontological neutrality of logic with respect to existential assumptions relating to the ontological nature of linguistic expressions and their extra-linguistic ontological counterparts. The issues connected with applying logic while explaining the manner of using linguistic tokens and linguistic types to determine notions of language communication are raised and illustrated in the last chapter of the work, bearing the title “A Logical Conceptualization of Knowledge on the Notion of Language Communication”. (shrink)

A survey of contemporary physical science, and an attempt to envision a philosophy in harmony with it. The discussion of physics centers on three topics: the status of postulates and first principles; the movement away from limited forms of empiricism toward the acknowledgment of aesthetic and metaphysical considerations in framing theories; and the disappearance of mechanical models in favor of increasingly abstract mathematical formulations. The exposition of physical theory is lively and imaginative; the treatment of the more properly philosophical (...) problems is stimulating, but will often leave the reader wishing for a more searching analysis.--B. J. H. (shrink)

A comprehensive study of Plato's last and most difficult work. Professor Morrow's theme is that in the Laws Plato is applying his basic principles to the precise historical conditions of his time, out of consuming interest in the moral and political development of mankind. The concept of the "mixture" or "mean," as developed in the Politicus and Philebus, is treated as the key to the philosophical interpretation of the Laws, law itself being the "limit"; human nature, the natural environment, and (...) existing laws and customs, the "unlimited." Prof. Morrow places the weight of his interpretation on the latter, since a determination of the actual character of Greek institutions, as Plato knew, seems essential to a correct analysis of the "composite" institutions we find in the Laws.--. (shrink)

This is a reasonably thorough consideration of various views regarding what pain is. Historical approaches to the problem are discussed and criticized. The two chapters, "Is Pain a Sensation?" and "Is Pleasure a Sensation?," serve as a good introduction to the difficulties of the issue. Much conceptual confusion due to ambiguity of the terminology is clarified. Also presented are contemporary views, including those based on recent empirical research. This leads to Trigg's conclusion that although physical pain is usually regarded as (...) both a sensation and an emotion, it is actually only a sensation, independent of the fact that it normally disturbs us.--B. L. (shrink)

The author states that his purpose in this work is not primarily Peirce scholarship but epistemology. But the concentration is on Peirce’s theory of knowledge, a concentration which centers around what the author thinks is Peirce’s most valuable contribution to the subject—a solution to the problem of skepticism. In contrast to Descartes’ assertion that knowledge must be based on primitive intuitions, Peirce contends that all thought is in process, an organically intertwined system of inferences, a continuous flow of signs. Because (...) thinking is a process in time, it is always fallible. Rather than this being a hindrance to knowledge, Davis sees this as the key to Peirce’s escape from skepticism, for the knowledge so described is a continuous self-corrective process, a web which, if we but make the effort to untangle it, will continue to reward us with advance toward the truth. Of more revolutionary importance to the theory of knowledge, according to Davis, is Peirce’s theory of abduction, his answer to the problem of how synthetic knowledge is possible. Abduction is the act of making up explanatory hypotheses. It issues in insights which are the outgrowth of creativity and imagination. The test of these unifying ideas is their appropriateness or ability to satisfy our sensibilities. It is instinct, or that to which we are naturally bent, which guides the abductive process. Throughout this book great emphasis is placed on the importance of this to Peirce and to an adequate epistemology of instinct, feelings, the work of the heart, or sensibility. The scientist, as Davis sees it, is thus akin in method to the creative artist. While Davis intends also to show how this aspect of Peirce is consistent with his pragmatic maxim, their relationship is never quite clarified in this work. Nevertheless, the book is a well-written and very readable treatment of Peirce’s epistemology. It also includes a great many comparisons with similar and contrasting positions as found in a wide range of contemporary and classical philosophical treatises.—B.A.M. (shrink)

A "biblico-theological" study of certain aspects of the scripturally revealed will of God for man's conduct, aiming "to show the basic unity and continuity of the biblical ethic." --L. K. B.

Published in a series, Views and Controversies about Classical Antiquity, this collection consists of fifteen articles or selections dealing with the recent controversy concerning the political doctrines of Plato. Most of the articles were published in direct response to Popper's controversial views expressed in The Open Society and Its Enemies. While some of the more interesting comments on Popper's views are included, a good bibliography and guide to the literature would have greatly increased the value of the book. By photographically (...) reproducing the original articles one might have hoped for an inexpensive edition; instead there is a confusing variety of types.--R. J. B. (shrink)

It is difficult to imagine mathematics without its symbolic language. It is especially difficult to imagine doing mathematics without using mathematical notation. Nevertheless, that is how mathematics was done for most of human history. It was only at the end of the sixteenth century that mathematicians began to develop systems of mathematical symbols . It is startling to consider how rapidly mathematical notation evolved. Viète is usually taken to have initiated this development with his Isagoge of 1591, and a recognisably (...) modern symbol system was available by the 1630s . In little more than a generation, mathematicians went from writing mathematics in natural language to manipulating symbols much as we do today. The manipulation of symbols became both a source of new mathematics and a mode of mathematical argument. This required profound conceptual changes in both mathematics and philosophy; antique conceptions of number, proof, language, and mathematics had to be replaced or at least suspended. Thus, the development of mathematical symbolism was sufficiently rapid and profound to justify the word ‘revolution’.Moreover, what began as a technical innovation in mathematics soon took on a wider philosophical significance. The last line of Viète's introduction reads ‘To solve every problem’. Viète presumably meant that his algebra would solve every mathematical problem . However, two generations after Descartes, the teenage Leibniz articulated the characteristically modern dream of a general algebra of thought . In this ‘universal characteristic’, conceptual errors would …. (shrink)

This book attempts to portray a unity in the work of William James that the author believes is achieved by James’ constant concern with man. Dooley begins with an analysis of James’ early psychological works emphasizing the key notion of an efficacious consciousness that selects according to its needs and purposes. The author begins to paint an "interactionist" view of man, although at this point in James’ career it is admittedly only a "passing thought." A similar vein is struck in (...) James’ moral and religious works where they describe the experience of free choice as a feeling of effort, a passional nature which can decide what we shall believe in certain cases, and a conversion which is explained by certain controlling interests of consciousness. But these early intimations do not yet point to any experience of a self as the source of these activities. (shrink)

The task which Wolz sets himself in this work has two parts. First, he wants to rescue Plato from the Platonists, from those who overlook the dramatic dimensions of the dialogues and try to present Plato as a someone who adheres dogmatically to a settled doctrine. The literalness of the Platonists' reading of the dialogues leads them to neglect the searching nature of Plato's thought which, according to Wolz, remains Socratic and "liberal." In the words of Wolz's subtitle, Plato is (...) "in search of selfhood.". (shrink)

W. D. Ross’s ethical theory requires us somehow to compare the metaphorical “weights” of different prima facie duties, but it leaves mysterious how this might be done. The formulation of a procedure to achieve such a comparison would be desirable on practical, theoretical, and pedagogical grounds. I formulate a procedure that is congenial to Ross’s theory. Central to my procedure are instructions to characterize the weight of each prima facie duty with respect to (a) the general stringency of this (...) kind of duty, (b) the stringency of this particular duty relative to other duties of its own kind, and (c) the degree to which the duty specifically demands the particular action that it favors in a given case. The procedure leads to a determination of one’s actual, all-things-considered duty in some cases but not in all. (shrink)

W. D. Ross’s ethical theory requires us somehow to compare the metaphorical “weights” of different prima facie duties, but it leaves mysterious how this might be done. The formulation of a procedure to achieve such a comparison would be desirable on practical, theoretical, and pedagogical grounds. I formulate a procedure that is congenial to Ross’s theory. Central to my procedure are instructions to characterize the weight of each prima facie duty with respect to (a) the general stringency of this (...) kind of duty, (b) the stringency of this particular duty relative to other duties of its own kind, and (c) the degree to which the duty specifically demands the particular action that it favors in a given case. The procedure leads to a determination of one’s actual, all-things-considered duty in some cases but not in all. (shrink)

The paper illustrates how organic chemists dramatically altered their practices in the middle part of the twentieth century through the adoption of analytical instrumentation - such as ultraviolet and infrared absorption spectroscopy and nuclear magnetic resonance spectroscopy - through which the difficult process of structure determination for small molecules became routine. Changes in practice were manifested in two ways: in the use of these instruments in the development of 'rule-based' theories; and in an increased focus on synthesis, at the expense (...) of chemical analysis. These rule-based theories took the form of generalizations relating structure to chemical and physical properties, as measured by instrumentation. This 'Instrumental Revolution' in organic chemistry was two-fold: encompassing an embrace of new tools that provided unprecedented access to structures, and a new way of thinking about molecules and their reactivity in terms of shape and structure. These practices suggest the possibility of a change in the ontological status of chemical structures, brought about by the regular use of instruments. The career of Robert Burns Woodward (1917-1979) provides the central historical examples for the paper. Woodward was an organic chemist at Harvard from 1937 until the time of his death. In 1965, he won the Nobel Prize in Chemistry. (shrink)