NOT ALL QUALITIES ARE REASONS.
How can all qualities be potentialities? It is easy to see that beauty and health are qualities. But how could ugliness and sickness, weakness and general impotence, be qualities? Is it because they qualify certain things? But what hinders the qualified things from being called such by mere nomenclature, as homonyms, and not because of a single (all-sufficient) reason? Besides, what would hinder them from being considered not only according to one of the four modes,[265] but even after each one of the four, or at least after any two of them? First, the quality does not consist in "acting" and "experiencing";[266] so that it is only by placing oneself at different viewpoints that one could call what "acts" and "experiences" a quality, in the same sense as health and sickness, disposition and habitude, force and weakness. Thus power is no longer the common element in these qualities, and we shall have to seek something else possessing this characteristic, and the qualities will no longer all be reasons. How indeed could a sickness, become a habituation, or be a reason?