 Ramus systematized the arts according to his method, which stated that each art or doctrina should have exclusive rights to its own principles. One result of this was that, as mentioned above, he totally rejected metaphysics as a discipline, since ontological issues could not be separated from logical ones. Another was that he defined rhetoric as having only two parts: style and delivery (elocutio and pronuntiatio). This was an extremely radical transformation of rhetoric, which was usually considered to have three additional parts (inventio, iudicium and memoria). It is easy to understand why he excluded inventio and iudicium from rhetoric, since he regarded them as belonging to dialectic. As Mack points out, this did not in any way mean that Ramus thought that the practice of rhetoric could be restricted solely to style and delivery. On the contrary, he strongly maintained that all the parts of rhetoric and dialectic were closely intertwined in performance; and Mack underlines that Ramus in no way wanted to reduce the scope of rhetoric: 