This paper defends a simple thesis: that knowledge is belief for reasons that are both objectively and subjectively sufficient. I take a dogmatic approach, devoting the bulk of the paper to an explanation of what this means, and of why it explains both what knowledge is like, and why it is important; the theory is justified by its fruits. I go on to illustrate, by appeal to my main thesis, how knowledge comes to play some of the key roles that it does, including looking at Williamson’s arguments that knowledge is prime and for its distinctive explanatory role, as well as why my account explains and predicts the complicated behavior of knowledge in cases involving defeaters, defeated defeaters, and defeaters whose defeaters are defeated, as well as the different possible kinds of defeat – the primary source of complications in the Gettier literature. These facts are easily explained by the central thesis of the paper, without either giving up on the analysis of knowledge or resorting to arbitrary or ad hoc measures. Since the last five decades of literature might lead one to find it fairly audacious to propose an analysis of knowledge, a final section addresses the putative inductive grounds for general pessimism about the Gettierological project.