In this paper I argue that the accepted reconstruction of Suetonius’ De viris illustribus has been shaped by unexamined assumptions that have been allowed to take on the appearance of fact. I begin by surveying the scholarly reconstruction of this work from the fifteenth century until today. I then examine two key underlying assumptions: that Suetonius planned and published his series of literary lives as a single compendious work and that it excluded men who were not writers or wrote in Greek; in both cases I propose alternative hypotheses. I lastly test these alternatives by sketching a new approach to a possible Suetonian book De philosophis. I conclude that the more we rid ourselves of a priori assumptions about De viris illustribus, the more clearly we can see that Suetonius’ interests and approach were remarkably consistent throughout all his lives.