Abstract

In spite of his tragically short life, Ramsey made extensive contributions in the fields of mathematics, logic, economics and philosophy. In this article we focus on Ramsey's investigations into the notions of belief and judgement, their truth conditions and probability theory. We show that the central role given by Ramsey to belief and action together with his pragmatism allows for a new interpretation of the theories of truth and probability, paving the way for a modern decision theory.