The [Vienna] Circle listed Ramsey in their Manifesto of 1929 as one of those ‘sympathetic’ to their mission, and this is still a frequently expressed opinion. But it simply isn’t true. Ramsey, young as he was, pulled against Russell, Wittgenstein and the Vienna Circle, who at the time were engaged in a quest for certainty and purity. In contrast, Ramsey sought conceptions of truth and knowledge that had their basis in what would work best for human beings. He called himself a ‘pragmatist’, after the founder of the American tradition of pragmatism, Charles S Peirce (1839-1914). While Peirce too was committed to taking experience seriously, and to declaring abstruse metaphysics meaningless, he thought that truth was what would best fit with human experience and knowledge – a conception of truth miles away from the reductionist theory typified by the Vienna Circle.

https://aeon.co/essays/what-is-truth-on-ramsey-wittgenstein-and-the-vienna-circle