This style of argumentation is what Chesterton refers to as using 'Uncommon Sense' – that is, that the thinkers and popular philosophers of the day, though very clever, were saying things that were nonsensical. This is illustrated again in "Orthodoxy": "Thus when Mr. H. G. Wells says (as he did somewhere), 'All chairs are quite different', he utters not merely a misstatement, but a contradiction in terms. If all chairs were quite different, you could not call them 'all chairs'." Or, again from "Orthodoxy":