The purpose of this project is to investigate the nature and typology of those modal notions that are required by a materialist conception of the world. The starting point is the hypothesis that we need modal concepts of metaphysical character
(i) to account for the notion of truth that is needed to ground such a conception,
(ii) to provide a satisfactory explanation of the relations between mental properties and the physical properties the realise them, and
(iii) to understand the link between secondary and intentional properties and our perceptions of them.
