Catherine Joanna Rowett

This is a book about the invention of Western philosophy, and the first thinkers to explore ideas about the nature of reality, time, and the origin of the universe. Generations of philosophers, both ancient and modern, have traced their inspiration back to the presocratics, even though we have very few of their writings left. In this book, Catherine Osborne invites her readers to dip their toes into the fragmentary remains of thinkers from Thales to Pythagoras, Heraclitus to Protagoras, to try to fill in the bits of a jigsaw that has been rejigged many times and in many ways.

Ralph Cudworth (1617-88) was one of the Cambridge Platonists. His major work, The True Intellectual System of the Universe, was completed in 1671, a year after Spinoza published (anonymously) the Tractatus Logico-philosophicus. It was published a few years later, in 1678. Cudworth offers a spirited attack against the materialism and mechanism of Thomas Hobbes. His work is couched as a search for truth among the ancient philosophers, and this paper examines his use of the Presocratics as a tool for discussing the issues of his day.

I consider the relation between the shape or structure of the world and the moral position occupied by human beings, and show that a cosmology that places earth at the centre does not give the centre of the universe pride of place but the lowest place, so any reluctance to move the earth from the centre of the universe was not due to thinking that humans must be in the most important position. From Plato on, the surface of the earth is at the bottom and the outer heaven is the highest place. This applies to ancient thought and to Christian thought.

In this paper I explore a famous part of Plato’s Theaetetus where Socrates develops various models of the mind (picturing it first as a wax tablet and then as an aviary full of specimen birds). These are to solve some puzzles about how it is possible to make a mistake. On my interpretation, defended here, the discussion of mistakes is no digression, but is part of the refutation of Theaetetus’s thesis that knowledge is “true doxa”. It reveals that false doxa is possible only if there is a certain stock of abstract knowledge, conceptual knowledge, that is not awareness of the particular individual that is being described. The individual must be identified under some description, or seen as something of a certain kind. Error can only occur if the description applied misdescribes the situation, but then if it is to be applied falsely it must first have been known from somewhere else. So knowledge cannot be reduced to the application of descriptions to particulars, but is to be found in the prior possession of abstract descriptions that can be deployed in identifying particular individuals on the ground.

A discussion of De anima 3.3 designed to show that phantasia serves to prevent a dualism of different objects for perception and thought, and ensures that attention is directed to real objects in the world, for both animals and humans. when they perceive and when they think about things in their absence. There is a continuity between animal and human behaviour, based on the common use of perceptual attention as the basis of mental attention. The objects of thought are not any more propositional or conceptual than the things that both humans and animals encounter and engage with in normal behaviour.

In this, the first half of Philoponus' analysis of book one of "Aristotle's Physics", the principal themes are metaphysical. Aristotle's opening chapter in the "Physics" is an abstract reflection on methodology for the investigation of nature, 'physics'. Aristotle suggests that one must proceed from things that are familiar but vague, and derive more precise but less obvious principles to constitute genuine knowledge. His controversial claim that this is to progress from the universal to the more particular occasions extensive apologetic exegesis, typical of Philoponus' meticulous and somewhat pedantic method. Philoponus explains away the apparent conflict between the 'didactic method' (unavoidable in physics) and the strict demonstrative method described in the "Analytics". After 20 pages on chapter 1, Philoponus devotes the remaining 66 pages to Aristotle's objections to two major Presocratic thinkers, Parmenides and Melissus. Aristotle included these thinkers as an aside, because they were not engaged in physics, but in questioning the very basis of physics. Philoponus investigates Aristotle's claims about the relation between a science and its axioms, explores alternative ways of formalising Aristotle's refutation of Eleatic monism and provides a sustained critique of Aristotle's analysis of the Eleatics' purported mistakes about unity and being.

There is an analogy between Timaeus's act of describing a world in words and the demiurge's task of making a world of matter. This analogy implies a parallel between language as a system of reproducing ideas in words, and the world, which reproduces reality in particular things. Authority lies in the creation of a likeness in words of the eternal Forms. The Forms serve as paradigms both for the physical world created by the demiurge, and for the world in discourse created by Timaeus: his discourse gains its validity not from faithfulness to the way things appear, or the way particular things 'actually happened', but in virtue of its attempt to express in words a likeness of the perfect and eternal reality. There are implications for Plato's philosophy of language, and for the relation between words and things (words do not depict or name things but can be used to construct worlds in a parallel way to the manner in which things construct worlds, both worlds being modelled on one common world of ideas). The match between world and discourse is because of their common pictorial relation (likeness) to an independent model.