Abstract

In this paper, I examine Augustine’s response to two Socratic statements: his exhortation for us to know ourselves, and his claim that he knows only that he knows nothing. Augustine addresses these statements in many works, but I focus in particular on his discussion of error in Contra Academicos, and his account of self-knowing (and not-knowing) in De Trinitate (DT). For Augustine, error can occur in at least four distinct ways, and one of his main purposes in Contra Academicos is to show that having an overly narrow view of error, focused on only one of those ways—namely, approving a falsehood as a truth—too easily leads to skepticism. He argues instead that erring can be a sin both of commission and of omission, and that failing to assent when one should assent is just as problematic as assenting when one should not. In both Contra Academicos and De Trinitate, Augustine extends his position by exploring the ways in which one can achieve epistemic certainty. But in doing this, he also offers scattered remarks about how one recognizes that one has not yet achieved certain knowledge, and thus about how one can know that one does not know. It is here that Augustine’s views are the most muddled, since he simultaneously claims that we (as humans in this life) are ignorant in many fundamental ways, that knowledge of something requires knowledge of that thing as a whole, and that nevertheless we can know ourselves, which obviously involves knowing that we do not know. It is to this puzzling group of claims that the remainder of the paper is addressed.