An observation -- Post-gettier accounts of knowledge -- Knowledge stories -- Intuitions about knowledge -- Important truths -- Maximally accurate and comprehensive beliefs -- The beetle in the box -- Knowledge blocks -- The theory of knowledge and theory of justified belief -- The value of true belief -- The value of knowledge -- The lottery and preface -- Reverse lottery stories -- Lucky knowledge -- Closure and skepticism -- Disjunctions -- Fixedness and knowledge -- Instability and knowledge -- Misleading defeaters -- Believing that I don't know -- Introspective knowledge -- Perceptual knowledge -- A priori knowledge -- Collective knowledge -- A look back -- Epistemology within a general theory of rationality -- The core concepts of epistemology.