Aristotle: Theoretical Science

In this first part of a 2-part survey of Aristotle's epistemology, I present an overview of the features Aristotle attributes to gnōsis (cognition or knowledge), a term Aristotle applies to true cognitive states, whether rational or non-rational. Gnōsis is being in contact with reality. How this is done differs depending on the domain but for Aristotle all the cases involve taking on the form of the object known, which is what makes it factive. I present perception and experience (empeiria) and (...) the role they play in acquiring knowledge. I then cover Aristotle's understanding of belief (hupolēpsis) and opinion (doxa) and lay out why he thinks they are rational activities, but not excellences. I then provide an overview of current scholarly views on nous (comprehension or understanding) and epistēmē (scientific knowledge). (shrink)

In this second part of a 2-part survey of Aristotle's epistemology, I present an overview of Aristotle's views on technē (craft or excellent productive reason) and phronēsis (practical wisdom or excellent practical reason). For Aristotle, attaining the truth in practical matters involves actually doing the right action. While technē and phronēsis are rational excellences, for Aristotle they are not as excellent or true as epistēmē or nous because the kinds of truth that they grasp are imperfect and because they are (...) excellent states for humans, not simply speaking. I then discuss why Aristotle takes sophia (wisdom), understanding and scientific knowledge of the best things, to be its own excellence. While this is the best cognitive state for human beings, I argue that Aristotle thinks divine cognitive activity is different in kind and more perfect than any human activity. (shrink)

In this paper I argue against rationalist readings of Aristotle's epistemology, on which our scientific understanding is justified on the basis of certain demonstrative first principles that are themselves justified only by some brute form of rational intuition. I then investigate the relationship between our intuition of principles and the broadly perceptual knowledge from which it derives. I argue that, for Aristotle, perceptual knowledge helps justify our intuition of principles, and also serves as an authority against which these principles and (...) their consequences must be assessed. I end by considering how we should understand the justificatory role played by perception, and sketching the nuanced, empirically-minded sort of foundationalism I take Aristotle to endorse. (shrink)

Aristotle's cognitive ideal is a form of understanding that requires a sophisticated grasp of scientific first principles. At the end of the Analytics, Aristotle tells us that we learn these principles by induction. But on the whole, commentators have found this an implausible claim: induction seems far too basic a process to yield the sort of knowledge Aristotle's account requires. In this paper I argue that this criticism is misguided. I defend a broader reading of Aristotelian induction, on which there's (...) good sense to be made of the claim that we come to grasp first principles inductively, and show that this reading is a natural one given Aristotle's broader views on scientific learning. (shrink)

Exploring what two foundational figures, Plato and Aristotle, have to say about the nature of human awareness and understanding, Aryeh Kosman concludes that ultimately the virtues of thought are to be found in the joys and satisfactions that come from thinking philosophically, whether we engage in it ourselves or witness others' participation.

This chapter discusses the first part of Aristotle's Posterior Analytics A-33, 88b30-89a10. I claim that Aristotle is not concerned with an epistemological distinction between knowledge and belief in general. He is rather making a contrast between scientific knowledge (which is equivalent to explanation by the primarily appropriate cause) and some explanatory beliefs that falls short of capturing the primarily appropriate cause.

Aristotle, in his Metaphysics, not only tries to establish a relationship that is direct, coherent, inter-operational and "precise" between this science, its name as a science, and its object of study, but also begins an indignation that tries to set a science — materially adequate and formally correct — to study τὸ ὂν ᾗ ὂν. In order to complete this task, Aristotle does an in-focus strategy that consists on the diffusion of τὸ ὄν in its categories, that allows Aristotle the (...) possibility of formulate a science ἐπιστήμη to study τὸ ὂν ᾗ ὂν at the same time that supports the diffusion of τὸ ὄν in the "different categories or supreme genres" of τὸ ὄν. Due to this argumentation, Aristotle distinguishes the ἐπιστήμη σοφία of any other type of knowledge: the former is fundamentally an enquiry "about the first causes (πρῶτα αἴτια) and the principles (ἀρχὰς)". With this conception in mind, Aristotle was able to characterize several related forms of the ἐπιστήμη σοφία which, as a whole, eventually allow him to establish a science of the principles and causes "maximally universal and referred to…everything real", and in consequence, to "that that is, as long as something is". In this work, I will try to reconstruct such arguments, and offer some observations and conjectures referred to these notions that plausibly incline the scale in favor of an ontological reading of Aristotle’s Metaphysics, in order to contribute to clarify the confusion that exists between the aim of the discipline with the justification to establish the existence of its own object. (shrink)

Abstract In Posterior Analytics II.19 Aristotle raises and answers the question, how do first principles become known? The usual view is that the question asks about the process or method by which we learn principles and that his answer is induction. I argue that the question asks about the original prior knowledge from which principles become known and that his answer is perception. Hence the aim of II.19 is not to explain how we get all the way to principles but (...) to defend the claim that our knowledge of them originates in perception. Aristotle explains how we learn principles earlier in book II, in his account of definitional inquiry. In II.19 he explains how we reach by induction the preliminary accounts necessary for such inquiries. (shrink)

The article evaluates the Domain Postulate of the Classical Model of Science and the related Aristotelian prohibition rule on kind-crossing as interpretative tools in the history of the development of mathematics into a general science of quantities. Special reference is made to Proclus’ commentary to Euclid’s first book of Elements , to the sixteenth century translations of Euclid’s work into Latin and to the works of Stevin, Wallis, Viète and Descartes. The prohibition rule on kind-crossing formulated by Aristotle in Posterior (...) analytics is used to distinguish between conceptions that share the same name but are substantively different: for example the search for a broader genus including all mathematical objects; the search for a common character of different species of mathematical objects; and the effort to treat magnitudes as numbers. (shrink)

At the beginning of Posterior Analytics 2.19 Aristotle reminds us that we cannot claim demonstrative knowledge ( epistêmê apodeiktikê ) unless we know immediate premisses, the archai of demonstrations. By the end of the chapter he explains why the cognitive state whereby we get to know archai must be Nous . In between, however, Aristotle describes the process of the acquisition of concepts, not immediate premisses. How should we understand this? There is a general agreement that it is Nous by (...) means of which we acquire both premisses and concepts. I argue that this cannot be the case. Since concepts are simples while premisses are composites (predications of concepts), the two cannot be objects of the same cognitive state. I further argue that, whereas Nous is responsible for our grasp of concepts, the state Aristotle elsewhere calls non-demonstrable knowledge is the one whereby we get to know the premisses of demonstrations. (shrink)

Two central accounts of human cognition emerge over the course of the Middle Ages: the theory of divine illumination and an Aristotelian theory centered on abstraction from sense data. Typically, these two accounts are seen as competing views of the origins of human knowledge; theories of divine illumination focus on God’s direct intervention in our epistemic lives, whereas Aristotelian theories generally claim that our knowledge derives primarily (or even entirely) from sense perception. In this paper, I address an early attempt (...) to reconcile these two accounts—namely, Robert Grosseteste’s commentary on Aristotle’s Posterior Analytics—and I argue that Grosseteste’s efforts to bring Aristotle’s account of human cognition into harmony with a theory of divine illumination proves both philosophically interesting and largely successful. Grosseteste’s claim that God does not directly illumine our intellects in this life opens his theory to the worry that Grosseteste leaves the divine out of his theory of divine illumination in the CPA. Steven Marrone, for example, holds that Grosseteste’s Aristotelian focus in this work causes him to abandon the theory of divine illumination he advocated in the earlier De veritate in favor of a modified theory of “human” illumination. I argue in contrast that Grosseteste does give God a role in human knowledge in the CPA—a role that allows human beings to remain largely responsible for the acquisition of knowledge while still requiring God’s illumination for actual cognition. In short, I conclude that, although human bodies interfere with God’s direct illumination of our intellects, God nevertheless plays a crucial ideogenic role in human cognition by illuminating the objects of our intellection and making them intelligible to us. (shrink)

Nothing has so plagued twentieth-century philosophers of science as the demarcation problem—the effort to determine what constitutes science and marks it off from other human pursuits. We have come to the end of the century with, to say the least, no consensus among philosophers on this issue. This has led some, such as Larry Laudan, to announce the abandonment of the demarcation project, urging philosophers to turn their attention elsewhere. One wonders, however, whether all the options have been explored. In (...) particular, has the problem been sufficiently investigated in light of its historical origins? This question takes on some urgency, not only with the failure of modern philosophy of science to develop a viable definition of science, but also in light of recent developments in Aristotle studies. After all, Aristotle was the first philosopher to attempt a systematic account of the nature of science and the details of this account have been a major focus of the scholarship of the past two decades, especially in the work of such scholars as Pierre Pellegrin, James Lennox, and David Balme, to mention only a very few. (shrink)

According to the standard and largely traditional interpretation, Aristotle’s conception of nous, at least as it occurs in the Posterior Analytics, is geared against a certain set of skeptical worries about the possibility of scientific knowledge, and ultimately of the knowledge of Aristotelian first principles. On this view, Aristotle introduces nous as an intuitive faculty that grasps the first principles once and for all as true in such a way that it does not leave any room for the skeptic to (...) press his skeptical point any further. Thus the tradi- tional interpretation views Aristotelian nous as having an internalist justificatory role in Aristotelian epistemology. In contrast, a minority (empiricist) view that has emerged recently holds the same internalist justificatory view of nous but rejects its internally certifiable infallibility by stressing the connection between nous and Aristotelian induction. I argue that both approaches are flawed in that Aristotle’s project in the Posterior Analytics is not to answer the skeptic on internalist justificatory grounds, but rather lay out a largely externalist explication of scientific knowledge, i.e. what scientific knowledge consists in, without worrying as to whether we can ever show the skeptic to his satisfaction that we do ever possess knowledge so defined. (shrink)

This paper highlights an important distinction underlying the possibility of inquiry, between first _identifying the subject of inquiry and ultimately _explaining it: that the former can be achieved before and without the latter is a presupposition of inquiry. I believe Aristotle is keenly aware of this in _Posterior Analytics, II.8, where he shows how a scientific demonstration can "manifest" a definition. I argue that such a demonstration consists of two sorts of syllogisms, one identifying the definiendum, the other explaining it. (...) Further, this distinction is tied in crucial ways to two others: between existence and essence, and between particular and universal. (shrink)

Bringing together a group of outstanding new essays on Aristotle's De Anima, this book covers topics such as the relation between soul and body, sense-perception, imagination, memory, desire, and thought, which present the philosophical substance of Aristotle's views to the modern reader. The contributors write with philosophical subtlety and wide-ranging scholarship, locating their interpretations firmly within the context of Aristotle's thought as a whole. The paperback edition includes an additional essay by M. F. Burnyeat.

This is a brief dictionary entry on the Greek word "techne" (art or skill) as used in ancient Greek philosophy, in particular in the work of Plato and Aristotle. A techne may be a manual craft, such as carpentry, or a science, such as medicine. A techne is based on universal principles and is capable of being taught.

Exploring Aristotle's philosophical method and the merits of his conclusions, Irwin here shows how Aristotle defends dialectic against the objection that it cannot justify a metaphysical realist's claims. He focuses particularly on Aristotle's metaphysics, epistemology, philosophy of mind, and ethics, stressing the connections between doctrines that are often discussed separately.