 He also argued that universals being ‘one’ in contrast with the ‘many’ to which they correspond, there could be only one ‘Circularity’, one ‘number Two’, etc. This means that, for example, ‘the number Two’ or the universal ‘twoness’ being one, it cannot be a plurality composed of units and thus that ‘two and two make four’ is not an addition of universals such as ‘twoness and twoness make fourness’ or ‘the number Two added to the number Two makes the number Four’. These expressions have no sense according to Cook Wilson, for whom ‘two and two make four’ merely means that ‘any two things added to any other two things make four things’ (OPD, 249). This is why numbers qua universals are ‘unaddible’ or ‘uncombinable’ (ἀσύμβλητοι) as Aristotle put it in, e.g., Met. M 8 1083a34, a view that Cook Wilson takes to be “exactly the Platonic doctrine” (OPD, 250).