Abstract

This article is devoted to the historical roots of the quest for rigor associated with analytic philosophy. Starting out from distinctions between different senses of “rigourµ, it considers the rather diverse conceptions and pursuits of rigour in Frege, Russell, Moore, Wittgenstein and Carnap. On that basis it diagnoses a potential conflict that some of them were aware of, but that has been ignored by recent commentators, namely between certain kinds of rigour on the hand, clarity and surveyability on the other. That conflict is related to the contrast between formal and non-formal ways of pursuing rigour. Frege, Wittgenstein and Carnap occupy distinct positions concerning both issues. Nevertheless, all three are united with n the hope to achieve philosophical progress by means of clear questions and statements put in the service of rigorous argument.