PHYSICAL POWERS DO NOT FORM A SECONDARY KIND OF QUALITY.
How can physical powers form a secondary kind of qualities? If they be qualities only so far as they are powers, this definition would not suit all qualities, as has been said above. If boxing ability be a quality as far as it is a disposition, it is useless to attribute to it a power, since power is implied in habituation. Further, how should we distinguish the natural boxing ability from that which is scientifically acquired? If both be qualities, they do not imply any difference so far as one is natural, and the other acquired; that is merely an accident, since the capacity of boxing is the same form in both cases.