The absolute minimum of what remains, even in the view of those most hostile to Plato, is this: that we cannot express ourselves in a language composed wholly of proper names, but must have also general words such as ‘man’, ‘dog’, ‘cat’; or, if not these, then relational words such as ‘similar’, ‘before’, and so on. Such words are not meaningless noises, and it is difficult to see how they can have meaning if the world consists entirely of particular things, such as are designated by proper names.

Bertrand Russell, History of Western Philosop…, loc. 587