Aristotle, Rhetoric
J. H. Freese, Ed.

[5] We should begin by saying that we have kept our promise, and then state what we have said and why. Our case may also be closely compared with our opponent's; and we may either compare what both of us have said on the same point, or without direct comparison: “My opponent said so-and-so, and I said so-and-so on this point
and for these reasons.” Or ironically, as for instance, “He said this and I answered that; what would he have done, if he had proved this, and not simply that?” Or by interrogation: “What is there that has not been proved?” or, “What has my opponent proved?” We may, therefore, either sum up by comparison, or in the natural order of the statements, just as they were made, our own first, and then again, separately, if we so desire, what has been said by our opponent.