Abstract

In this closely argued monograph, the author examines one chapter of Plotinus’s treatise V.3 [49], titled “On the Knowing Hypostasis and That Which is Beyond.” In the fifth chapter of that work, Plotinus makes the case for asserting that knowledge is primarily or essentially self-knowledge. This is certainly not a novel claim in the history of ancient philosophy, as Kühn amply demonstrates. It is a central claim in Aristotle’s epistemology and the later Peripatetic tradition. What is of particular interest for the Plotinian account of knowledge as self-knowledge is that it is made in response to a skeptical argument found in Sextus Empiricus, although it is likely that it did not originate with him. That argument attempts to pose the following dilemma for any “dogmatist” who embraces self-knowledge. Either this self-knowledge is in effect one “part” of the knower knowing another “part,” or else it is one “part” knowing not another “part,” but rather knowing “itself.” The first horn of the dilemma means that self-knowledge is not knowledge at all, since the putative knower would have to be able to show that the first “part” is representing the second part accurately. And this is something that cannot be done without the first