THE LACK OF POWERS CANNOT BE SUBSUMED UNDER THE SAME CATEGORY AS THE POWERS.
What shall be said of thickness and thinness, of fatness and leanness? If the element common to these conceptions be a power belonging to the capacities, dispositions, and physical powers, which gives to each object the power it possesses, the statements of the absence of power will no longer be classified along with (the powers). Besides, in what sense can we call the figure and form of each thing a "power?" Further, essence would have been deprived of all powers that were essential, retaining only those it might have received. Then, quality would comprehend all actualizations of the beings, which, properly, are actualizations only so far as they act spontaneously; and also all actualizations of these properties, but only so far as they really exist. But quality consists in (unessential) powers (such as habituations and dispositions) classified below beings.[263] For instance, boxing ability does not belong among necessary human qualifications, such as rational functions. The latter would not be called a quality (as we would speak of boxing ability); and reasoning would be considered a quality only figuratively.