At the Roots of Rational Expressivism

The early writings of Wilfrid Sellars are characterized by the analysis of themes and problems from Rudolph Carnap's philosophy of language. In particular, Sellars investigated the notion of "material'' rules of inference and explored the possibility of a "pure'' pragmatics. In these initial researches Sellars laid the foundations for his inferentialist analysis of meaning. A crucial component of such an analysis is the seminal form of rational expressivism that Sellars began to develop at the time. In this paper I address the genesis of this idea and some of the main implications that it has on the characterization of the space of reasons.