Plotinos: Complete Works, v. 3 In Chronological Order,...

12. What other scheme of analysis of quality could we find, if the above were declared unsatisfactory? Must we distinguish first the qualities of the soul from those of the body, and then analyse the latter according to the senses, relating them to sight, hearing, taste, smell and touch?

To begin with, how can the qualities of the soul be divided? Will they be related to the faculty of desire, to anger, or reason? Will they be divided according to their suitable operations, or according to their useful or harmful character? In this case, would we distinguish several ways of being useful or harmful? Should we then likewise divide the properties of the bodies according to the difference of their effects, or according to their useful or harmless character, since this character is a property of quality? Surely; to be useful or harmful seems to be the property of both the quality, and the thing qualified. Otherwise, we should have to seek some other classification.