Powerful Qualities and the Metaphysics of Properties

In debates about the metaphysics of properties, many have claimed that properties are powers. According to the powers view, a property's nature disposes objects to behave in certain ways in response to certain stimuli. For example, the property of fragility disposes objects to smash when a force is applied to them. But how should we understand powers? There has recently been a surge of interest in the powerful qualities view of properties. Other views in the field either claim that properties are pure powers, or that they are qualities. The powerful qualities view rejects this dichotomy, saying that properties are both powers and qualities. In this paper, I distinguish some versions of the powerful qualities view, and some of the reasons to hold it. I also outline one of the most exciting elements of the view, which is its relation to the philosophy of mind.