Abstract

The phrase koine aisthesis appears, as far as I can see, very rarely in Aristotle. There is one definite use of the phrase in the De Anima, at 425a27. The word koine without aisthesis but such that the latter must be supplied may possibly occur at 431b5, but the text is uncertain there, and there is every reason why the word should be deleted from the text. This leaves us with a single occurrence of the phrase koine aisthesis in the De Anima and it is used explicitly to deal with perception of the koina, the so-called common sensibles. Outside the De Anima, the phrase occurs at De Memoria 450a10, and at De Partibus Animalium 686a27, and I think nowhere else. Of these two passages that from the De Memoria is, although somewhat obscure, in line with the De Anima reference; it seems to invoke the common sense for the perception of magnitude, motion and time, and also says that an image is a pathos of the common sense, presumably because an image must be of a magnitude. The De Partibus Animalium passage is somewhat more eccentric. It is concerned with the fact that man is the only animal to walk upright, and associates this with the fact that man can think. This would not be easy if he had much of his body weighing down on him from above, for weight makes unresponsive thought and the common sense- τὴν διάνοιαν καὶ τὴν κοινὴν αἴσθησιν. Whatever be the other curiosities in this passage, the close association of thought and the common sense is itself at first sight rather strange. If any account can be given of it, it is presumably because of the facts adduced in the De Memoria passage, that thinking involves images, and these the koine aisthesis.