Catherine Joanna Rowett

In this paper I argue, controversially, that Plato's Meno anticipates Wittgenstein's critique of essentialism. Plato is usually read as an essentialist of the very kind that Wittgenstein was challenging, and the Meno in particular is usually taken as evidence that Plato thought that to know something you must be able to define it, and that if you can't define it you can't investigate any other questions on the topic. I suggest instead that Plato shows Socrates proposing such a position (much as Wittgenstein's imaginary interlocutor might do), only to have it knocked down by what happens in the dialogue. Plato shows that one knows a concept when one can apply it in practice, or, for virtue, when one typically chooses to act in certain ways, passes certain judgements and so on. It turns out, then, that one who claims to "know what virtue is" need not give necessary and sufficient conditions for it.

I explore some enlightening alternative economic theories in Plato’s Republic which help to cast doubt on standard models of rationality in economics. Starting from Socrates’ suggestion that things work best if everyone says ‘mine’ about the same things, I discuss a kind of ‘belonging’ which merits more attention in political and economic theory. This kind of belonging is not about owning property, but it can (better) explain the desire to do things for others and for the collective good. But did Socrates forget to invoke it when addressing the puzzle about why the philosopher would willingly return to the cave?

Aristotle's Physics 1.4-9 explores a range of questions about the basic structure of reality, the nature of prime matter, the principles of change, the relation between form and matter, and the issue of whether things can come into being out of nothing, and if so, in what sense that is true. Philoponus' commentaries do not merely report and explain Aristotle and the other thinkers whom Aristotle is discussing. They are also the philosophical work of an independent thinker in the Neoplatonic tradition. Philoponus has his own, occasionally idiosyncratic, views on a number of important issues, and he sometimes disagrees with other teachers whose views he has encountered perhaps in written texts and in oral delivery. A number of distinctive passages of philosophical importance occur in this part of Book 1, in which we see Philoponus at work on issues in physics and cosmology, as well as logic and metaphysics. This volume contains an English translation of Philoponus' commentary, as well as a detailed introduction, commentary notes and a bibliography.

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.