Division and Argument
Some are of the opinion that division should always be used, as by it the cause will be more clear and the judge more attentive and more easily taught when he knows of what we speak to him and of what we intend afterward to speak.
Others think this is attended with danger to the orator, either by his sometimes forgetting what he has promised, or by something else occurring to the judge or auditor, which he did not think of in the division. I can not well imagine how this may happen, unless with one who is either destitute of sense or rash enough to plead without preparation. In any other respect, nothing else can set a subject in so clear a light as just division.
It is a means to which we are directed by the guidance of nature, because keeping in sight the heads on which we propose to speak, is the greatest help the memory can have.