Peter Fritz, The Foundations of Modality

This article is a brief presentation of the main ideas developed in Peter Fritz’s recent book The Foundations of Modality. The main goal of the book is to develop a theory of metaphysical necessity, a notion that has played a crucial role in analytic philosophy in the last decades. This project is carried out via the construction of a theory of propositional individuation, i.e., a theory of the conditions under which two propositions are the same. I start by introducing the debate about the theoretical status of metaphysical necessity. Then, I present Fritz’s central ideas about propositional individuation and the theory of metaphysical necessity he develops based on them.