In the Categories, Aristotle develops a classification system to assign each object known to man under one of ten categories. “Of things said without any combination, each signifies either substance or quantity or qualification or a relative or where or when or being-in-a-position or having or doing or being-affected. To give a rough idea, examples of substance are man, horse; of quantity: four-foot, fivefoot; of qualification: white, grammatical; of a relative: double, half, larger; of where: in the Lyceum, in the market-place; of when: yesterday, last-year; of being-in-a-position: is-lying, is-sitting; of having: has-shoes-on, has-armour-on; of doing: cutting, burning; of being-affected: being-cut, being-burned.”
I suppose that some people find classification systems interesting, but I failed to see the purpose of reading this text. To be able to identify “man” as a substance and “double” as a relative is an ability that is not useful in very many circumstances. Thus, this post is a short one sans video. Hopefully, the next book, in which Aristotle discusses the nature of the soul, is more intriguing. Until then, farewell.