Abstract

The aim of this paper is to apply Charles S. Peirce's pragmatic method to establishing if proponents of transcendental arguments could hold the conclusions of their arguments to be fallibly known. I will thus propose a pragmatic clarification of the concepts of a priority, necessity, and infallibility in order to ascertain if these concepts are unavoidably related or not. I will argue that an a priori knowable necessary proposition is not in principle indubitable, whereas a proposition infallibly known is so. Finally, I will apply these reflections to transcendental philosophy.