 The discussion in this past section and in the next focus on the nature of sensory qualities themselves. According to the representationalist, the qualities are not mental; the corresponding mental property of a sensory state is that of representing the relevant quality. Of course, it is sensory states and experiences themselves that interest philosophers of mind, and some critics of representationalism will protest that merely representing a quality cannot be all there is to having the qualitative character that needs explaining; we shall return to that complaint in section 4.2 below.