It is confirmed, however, if what subsists similarly is the property of what has similar subsistence, for the similarly subsisting will also be the property of what has similar subsistence; thus, since the physician subsists similarly with regard to being effective of health, as the trainer of the gymnasium to the being effective of a good habit of body, but the being effective of a good habit of body is the property of the trainer, to be effective of health would be the property of the physician.
Next, from those which subsist after the same manner, subverting, indeed, if what subsists after the same manner is not the property of what subsists after the same manner, for neither will what subsists after the same manner be the property of what subsists after the same manner, but if of that which subsists after the same manner, that which subsists after the same manner, is the property, it will not be the property of that thing of which it is stated to be the property. Thus, since prudence subsists after the same manner with regard to the honourable and the base, from their being a science of each of them, but to be the science of the honourable is not the property of prudence, it would not be the property of prudence to be the science of the base, but if it is the property of prudence to be the science of the honourable, it would not be the property of it to be the science of the base, since it is impossible that the same thing should be the property of many. For him who confirms, indeed, this place is of no use, for what subsists after the same manner is one thing compared with many.
