would play when not playing; or may we not say that he has the power of playing on the harp, when he does not play, but when he does not do it, of doing it?
Some indeed solve this (sophism) in another way, for if (the respondent) grants that he is able to do so, they say it does not happen that he who does not play plays, for he does not grant that he does it in whatever way it is possible, nor is it the same thing to say as it is possible, and in whatever way it is possible to do it. Still, it is evident that they do not solve it well, for of arguments from the same (place) there is the same solution, but this will not suit all, nor questions in every way, but is (adapted) to the interrogator, not to the argument.
Chapter 21
Arguments indeed are not derived from accent, neither in writings nor sentences pronounced, unless there may be a few, such as this argument, "Is τὸ οὗ καταλύεις a house?" yes! "Is not τὸ οὐ καταλύεις the negation τοῦ καταλύεις? yes! "But you said that τὸ οὗ καταλύεις was a house, therefore a house is a negation." How therefore the solution must be made, is clear, for "ου" does not signify the same thing, when pronounced more acutely, and when more gravely.
Chapter 22
Moreover, it is evident how we must oppose arguments derived from things asserted after the same manner, which are not the same, since we have the genera of the categories; for the one
