 As we have seen in section 1.2 above, Bradley’s original regress arguments targeted a one-category ontology of qualities, where by “qualities” Bradley seemed to have in mind unrepeatable particularized properties, i.e., tropes. But the same argument form has been used against the one-category ontology of qualities conceived as multiply occurring universals, as well as against the two-category ontologies of particulars and universals, as well as particulars and tropes.