Interpretation, Realism, and Truth: Is Peirce’s Second Grade of Clearness Independent of the Third?

Abstract:Most specialists agree that Peirce upholds his abstract definitions of reality and truth simultaneously and consistently with his pragmatic clarifications of those concepts. But some might assume that his pragmatic clarifications (the third grade of clearness) restrict the extensions of abstract definitions (the second grade of clearness), such that anything real must both be independent of what anyone thinks about it, per the abstract definition, and be an object of the would-be “final opinion”, per the pragmatic clarification. I call this reading Interpretive Dependence of the second grade of clearness on the third grade. In contrast, on Interpretive Independence, which I defend here, a concept can have a different extension on the second grade than it has on the third grade, such that it could be true, in a purely abstract sense, that there are realities that can never be known (metaphysical realism). “True” here must also be interpreted only according to an abstract definition, namely, one which Peirce endorses in 1906 and which, I argue, is a deflationary definition. Interpretive Independence not only allows Peirce to explain the intuitive appeal of metaphysical realism, while at the same time rejecting it, it also allows him to explain how there can be truths about fictional objects and truths in pure mathematics.