This thesis consists of the analysis of Peirce's essays Questions Concering Certain Faculties Claimed for Man and Some Consequences of Four Incapacities focused on the genesis of fallibilism and its dependence on the theory of representation. Peirce's epistemological position here is articulated as a rejection of foundationalism and its conditions (e.g. intuition and introspection) that are understood to be unfounded hypotheses due the character of our knowledge of the outside world. The aim of this thesis is to find out how Peirce's epistemology can work without the certainty of foundationalism. Keywords: Peirce, fallibilism, representation, critique of foundationalism, inference, epistemology