there is a two-fold consequence of consequents, for it is either as universal to particular, as animal to man, for it is taken for granted, if this is (joined) with that, that also is with this; or according to oppositions, for if this follows that, the opposite also follows the opposite. Hence also the argument of Melissus, for if what was begotten had a beginning, he requires it to be granted that the unbegotten had not (a beginning), wherefore, if the heaven is unbegotten, it is also infinite. Yet this is not so, for the consequence is vice versâ.
Chapter 29
In whatever syllogistically conclude from something being added, we must observe whether it being taken away, the impossible, nevertheless, results. Next, we must make this clear, and we must say that it was granted, not as seeming (true), but as adapted to the argument, but he, the arguer, uses what is nothing to the purpose.
Chapter 30
Against those which make many interrogations one, we must employ definition immediately in the beginning, for the interrogation is one to
