In this paper, I argue against the claim that in Plato's Republic the most important distinguishing feature between the philosopher and non-philosopher is that the philosopher has knowledge while the non-philosopher has, at best, true opinion. This claim is, in fact, inconsistent with statements Plato makes in later books of the Republic. I submit that the important distinction Plato makes concerns the type of knowledge possessed by the philosopher-ruler. As a result, we need to amend widely held scholarly interpretations of (...) important passages in the Republic ; most notably the passages containing the Sun, Line, and Cave. I consider the views of a number of important scholars and suggest a proposal that avoids this inconsistency with the text. An important consequence of my argument is that Philosophers are indeed not the only ones with knowledge in the Kallipolis. (shrink)