What does Locke think we can know about the external world? In this chapter, I present an alternative account of Locke’s epistemic project that is importantly different from traditional epistemology. I call this the “faculty view of knowledge,” where the answer to the question of what we can know lies in a descriptive account of what our minds are doing when we know. My interpretation of Locke’s account as a description of our mental faculties, enables us to understand Locke’s distinction between knowledge and judgment and to better accommodate what he thinks we can know about the external world.