Wherein does self exist? The question of self or personhood has held the minds of philosophers as far back as Plato. What, then, is the human sense of self, in so far as we understand it? This paper is will analyze the personal identity theory of Rene Descartes and John Locke in their respective discourses Meditations on First Philosophy and An Essay Concerning Human Understanding. Moreover it is the aim of the author not only to contrast their respective positions, but to argue the superiority of the Lockean account of identity over the Cartesian one. I begin by examining the two understandings of personal identity distinctively while minimally assessing necessary criticism of their views. I will then consider the superiority of Locke's view on personal identity in relation to his epistemic understanding.