 But although on this interpretation Aristotle seems to have arrived at his categories by considering different sorts of question and answer, the categories he was offering were supposed to be categories of entities, not of language; language was just a clue to truths about the world. As J. L. Ackrill writes, Aristotle’s Categories “is not primarily or explicitly about names, but about the things that names signify…Aristotle relies greatly on linguistic facts and tests, but his aim is to discover truths about non-linguistic items” (1963, 71).