As to the number, then, and kind of sources whence fallacies arise in discussion, and how we are to prove that our opponent is saying something false and make him utter paradoxes; moreover, by the use of what materials soleci is brought about, and how to question and what is the way to arrange the questions; moreover, as to the question what use is served by all arguments of this kind, and concerning the answerer's part, both as a whole in general, and in particular how to solve arguments and solecis on all these things let the foregoing discussion suffice.