  This confluence is particularly visible in texts relating to the foundations of mathematics, where Ramsey became disillusioned with Principia Mathematica, perhaps under the influence of Wittgenstein, whose criticisms of the axioms of infinity and reducibility, he had already taken seriously in ‘The Foundations of Mathematics’, as was just pointed out. Ramsey initially adopted Wittgenstein’s view of the quantifiers in the Tractatus as ‘logical products’ and ‘sums’, with universality being expressed, for predicate F, as an infinite conjunction