Plato: Perception

In the Phaedo, Socrates endorses the view that the senses are not a means whereby we may come to gain knowledge. Whenever one investigates by means of the senses, one is deceived. One can attain truth only by inquiry through intellect alone. It is a measure of the success of empiricism that modern commentators take a very different approach to Phaedo 65a9-67b3 than their neoplatonist forebearers did. In what follows I shall argue that, if they made too much of "Socrate's" (...) anti-empiricism, we make too little of it.I believe that careful examination of the presuppositions of Socratic questioning will reveal some principled reasons which lead to the view about sense perception that Socrates endorses in the Phaedo. These reasons are, I believe, wrong and I think that Plato may have had occassion to reconsider them later in his career. But even if this is so, it remains that Socrates' anti-empiricism in this dialogue is not simply a gratuitous epistemological reflection of the dialogue's otherworldly, ascetic ethical outlook. (shrink)

Possibility of falsehood arises in the early parts of plato's "sophist". I argue that the participants in the dialogue operate with two related analogies, one which considers spoken images to be fundamentally like seen images, and another analogy which considers the objects of stating or believing to be like the objects of perceiving. (the second analogy has parallels in "theaetetus" 188c-189b). These analogies lead to confusions which plato attempts to dispel in the later portions of the "sophist".

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I ask whether the Recollection argument commits Socrates to the view that our only source of knowledge of the Forms is sense perception. I argue that Socrates does not confine our presently available sources of knowledge to empirically based recollection, but that he does think that we can't begin to move towards a philosophical understanding of the Forms except as a result of puzzles prompted by the shortfall of particulars in relation to the Forms, and hence that our awareness of (...) the Forms is first prompted by sense-perception. This leaves open the possibility that once that critical awareness of the Forms is established, further reflection at a conceptual level may lead to continued recollection and learning without further input from the senses, and that this approach is what is recommended for the more advanced philosopher. Hence the position endorsed by Socrates in the Phaedo, recommending that the philosopher get in training for death, fleeing as far as is possible from the bodily senses which only distract, is consistent with the position on sense perception in the Recollection argument. The senses are treated as a necessary prompt to reflection, not because they provide our best source of knowledge, but because we start life tied to the senses and believing their objects important. (shrink)

This volume, including sixteen contributions, analyses ancient and medieval theories of intentionality in various contexts: perception, imagination, and intellectual thinking. It sheds new light on classical theories and examines neglected sources, both Greek and Latin.

This book collects texts from three specialists in ancient philosophy which deal with the question of perceptive and intellective knowledge in antiquity. They try to present, in their different analyzes, the complex interrelationship among perception and thought in ancient authors, like Heraclitus, Parmenides, Democritus, Plato and Aristotle. The purpose of the texts is to expose the visible field - the perceptual knowledge domain - interacts with the invisible - the domain of reason and thought. In other words, that among them (...) there is no a radical separation of these two areas, although they are clearly distinct. (shrink)

The paper offers an interpretation of a disputed portion of Plato’s Theaetetus that is often called the Secret Doctrine. It is presented as a process ontology that takes two types of processes, swift and slow motions, as fundamental building blocks for ordinary material objects. Slow motions are powers which, when realized, generate swift motions, which, in turn, are subjectively bundled to compose sensible objects and perceivers. Although the reading of the Secret Doctrine offered here—a new version of the “Causal Theory (...) interpretation”—is not without problems, these problems are acknowledged in Plato’s text, confirming that this interpretation is correct. (shrink)

Translated by the noted classical scholar Francis M. Cornford, this edition of two masterpieces of Plato's later period features extensive ongoing commentaries by Cornford that provide helpful background information and valuable insights. The Theatetus offers a systematic treatment of the question, "What is knowledge?" with most of the dialogue taking place between Socrates and the student Theatetus. Among the answers they explore: knowledge as perception; knowledge as true belief; knowledge as true belief plus an account (i.e., a justified true belief); (...) as well as variations on each of these answers. The Sophist, a related dialogue, follows Socrates' cross-examination of a self-proclaimed true philosopher, the Stranger from Elea, on the distinction between philosophers, statesmen, and sophists. (shrink)

I ask whether the Recollection argument commits Socrates to the view that our only source of knowledge of the Forms is sense perception. I argue that Socrates does not confine our presently available sources of knowledge to empirically based recollection, but that he does think that we can't begin to move towards a philosophical understanding of the Forms except as a result of puzzles prompted by the shortfall of particulars in relation to the Forms, and hence that our awareness of (...) the Forms is first prompted by sense-perception. This leaves open the possibility that once that critical awareness of the Forms is established, further reflection at a conceptual level may lead to continued recollection and learning without further input from the senses, and that this approach is what is recommended for the more advanced philosopher. Hence the position endorsed by Socrates in the Phaedo, recommending that the philosopher get in training for death, fleeing as far as is possible from the bodily senses which only distract, is consistent with the position on sense perception in the Recollection argument. The senses are treated as a necessary prompt to reflection, not because they provide our best source of knowledge, but because we start life tied to the senses and believing their objects important. (shrink)

The standard interpretation of "Theaetetus" 152-160 has Plato attribute to Protagoras a relativistic theory of truth and existence. It is argued here that in fact the individuals of Protagorean worlds are inter-Personal. (thus the Protagorean theory has public objects, but private truth). Also, a new interpretation is offered of Plato's use of heraclitean flux to model relativism. The philosophical and semantic consequences of the interpretation are explored.

"theaetetus" of the thesis that knowledge is sense-perception. After a brief defence of plato's handling of this thesis it is shown how the argument can, by the addition of one premiss, be rendered valid. A strong form of the 'proper objects' doctrine of perception is revealed as a crucial premiss. An implication of the argument is seen to be that perception in itself is unable to found an ordered and coherent picture of the world. A similar point, it is argued, (...) lies behind certain passages in the central books of the "republic". A tentative conclusion is that in the "theaetetus" plato retains and indeed sharpens the views about the sensible world which he expresses in the "republic". (shrink)

Though the two-world interpretation of Plato's metaphysics is no longer uncontested the question of the expendability of the physical world still predominates current discussions. Against this tendency the article suggests that Plato neither intended to dispose of sensory evidence altogether nor to locate the Forms in a separate realm of pure understanding. The Forms should rather be understood as the ideal principles determining the proper function of each entity. Such a 'functional view' of the Forms is discussed explicitly in Book (...) X of the Republic, but it can easily be extended to account for Plato's use of the Forms elsewhere. (shrink)

The question contrasts two ways of expressing the role of the sense organ in perception. In one the expression referring to the sense organ is put into the dative case ; the other is a construction with the preposition δiá governing the genitive case of the word for the sense organ.

The early Greek Stoics were the first philosophers to recognize the object of normal human perception as predicative or propositional in nature. Fundamentally we do not perceive qualities or things, but situations and things happening, facts. To mark their difference from Plato and Aristotle, the Stoics adopted phantasia as their word for perception.

I argue that Plato's purpose in the discussion of false belief in the "Theaetetus" is to entertain and then to reject the idea that thinking is a kind of mental grasping. The interpretation allows us to make good sense of Plato's discussion of 'other-judging' (189c-190e), of his remarks about mathematical error (195d-196c), and most importantly, of the initial statement of the puzzle about falsity (188a-c). That puzzle shows that if we insist on conceiving of the relation between thought and its (...) objects on the model of holding or grasping something in our hands, we will be unable to account for the possibility of false identity judgments: For no one who is literally grasping two things in his hands would seriously entertain the idea that one of the things is numerically identical with the other. (shrink)

I argue that Plato's purpose in the discussion of false belief in the "Theaetetus" is to entertain and then to reject the idea that thinking is a kind of mental grasping. The interpretation allows us to make good sense of Plato's discussion of 'other-judging' (189c-190e), of his remarks about mathematical error (195d-196c), and most importantly, of the initial statement of the puzzle about falsity (188a-c). That puzzle shows that if we insist on conceiving of the relation between thought and its (...) objects on the model of holding or grasping something in our hands, we will be unable to account for the possibility of false identity judgments: For no one who is literally grasping two things in his hands would seriously entertain the idea that one of the things is numerically identical with the other. (shrink)

A new volume on one of the most influential and most discussed works from antiquity should offer something new. In this truly interdisciplinary volume, a great number of intriguing problems posed by Plato's Timaeus are given a fresh and lucid treatment. Contributors from an unusual range of backgrounds reflect on aspects of Plato's astounding synthesis of natural philosophy, including cosmology, theology, perception, physiology, and more. Plato's synthesis was original, reusing previous ideas for a new vision of the structure and coherence (...) of the physical world: his "likely account" (Tim. 29bc) (as he preferred to call it) showed that a Maker or Creator used a form of "geometric atomism" to build up the universe .. (shrink)

Psiche sets up a close-knit comparison between the psychology of Plato's Republic and Freud's psychoanalysis. Convergences and divergences are discussed in relation both to the Platonic conception of the oneiric emergence of repressed desires that prefigures the main path of Freud's subconscious, to the analysis of the psychopathologies related to these theoretical formulations and to the two diagnostic and therapeutic approaches adopted. Another crucial theme is the Platonic eros - the examination of which is also extended to the Symposium and (...) Phaedrus - taken up explicitly by Freud in relation to the concept of libido. Finally, the author also addresses the two themes - of, inter alia, a metapsychological nature - inherent to the moral dimension. -/- Psiche istituisce un confronto ravvicinato tra la psicologia della "Repubblica" di Platone e la psicoanalisi di Freud. Convergenze e divergenze vengono discusse in relazione sia alla concezione platonica dell'emersione onirica dei desideri repressi, che prefigura la via regia per l'inconscio di Freud, sia all'analisi delle psicopatologie correlate a tali impostazioni teoriche, sia ai due approcci diagnostici e terapeutici adottati. Altro tema cruciale è l'eros platonico - la cui disamina viene estesa anche al "Simposio" e al "Fedro" - ripreso esplicitamente da Freud in relazione al concetto di libido. L'autore affronta, infine, le due tematizzazioni, di natura metapsicologica e non solo, inerenti alla dimensione morale. (shrink)