This paper explores the impact of pragmatism on logical empiricism in connection with the debate on the foundations of probability. Peirce 's conception of probability, anticipating the propensity interpretation launched by Popper in the late 1950s, is recalled together with the multifarious influence he had on a number of authors including Nagel , Reichenbach , and Ramsey . This is followed by a discussion of the impact of C.I. Lewis 's viewpoint on Carnap , to conclude with an overview of de Finetti 's deeply pragmatist perspective.