I barely touched on that theme in my thesis. So I am delighted that I can offer this piece for his festschrift.2 Owen (1966) gives the classic statement of this view. He reacts against Jaeger et al. (1962) 53, especially, but also De Vogel (1965, with critique by Düring (1966) and (Owen 1966, 128-130). Jaeger's view is part of a wider tendency to see Aristotle's work as emerging from Platonism. Jaeger (1962) and Case (1910);Case (1925) applied this reading primarily to Aristotle's Eudemus, Protrepticus and On Philosophy, Metaphysics, Nicomachean Ethics and Eudemian Ethics. For a similar suggestion with De Caelo, see Guthrie (1939) xxix-xxxi cited and developed by Ross (1957) 74-75. For this sort of treatment of the Organon as a whole, see Solmsen (1929). For the Poetics, see Solmsen (1935). More recently, Frede (1987) 27-28, argues for the view that species and genera in Plato's Sophist, Parmenides and Philebus exert a strong influence on the Categories. But even here Frede's claim is that Aristotle adapts, rather than adopts, the Platonic view, since Aristotle reverses the Platonic view which holds that the genera and species are primary. Menn (1995) 318-19 also connects the genera of the Sophist, but claims that the Categories give an exhaustive list of the highest genera for use in inquiry.We should also be aware that scholars debate whether the Categories is a single work and whether it is by Aristotle. Frede (1987) 13 has questioned whether the discussion of relativity at Cat. 11a20-37 is by the same author as the discussion of Cat. 6a36-8b24. To avoid tricky issues of authenticity and unity, I confine my claims to Categories 7 6a36-8b24, which is usually thought to be genuine Aristotle. 3 For example, an anti-Platonic theory of predication, as Owen (1966) 134-9. 4 See, for example, Owen (1966) 146;Owen (1960); Owen (1965).