Aristotelian and stoic sources in Abelard: the notion of “consent” (consensus – συץκατάθεσις)

Abstract

Peter Abelard’s (1079-1142) conception of moral sin contains a fundamental element from Stoicism, which is the notion of “consent” (consensus). After the presentation of the essentials of that Abelardian theory, we return to the source of that same idea in ancient and imperial Stoicism. According to their main representatives, “consent” or “assent” (sugkata/qesij) has a determining function not only in ethics, but also in the process of knowledge as well. We emphasize in passing the resemblance between some important components of Stoic epistemology and the theory expounded by Aristotle in the Posterior Analytics on the origin of knowledge. Augustine represents without any doubt one of the main intermediaries through whom this notion of consent is transmitted up to the time of Abelard in the 12th century. Even if he was influenced by the Bishop of Hippo on moral questions in general, Abelard seems to distance himself from Augustine by considering that consent is more a rational matter than a volitional one.