This chapter looks at how the impartialist axioms can be applied to epistemological questions to produce resolutions of conflicts of desires over what to believe, for example, if Ann wants Ben's belief about some matter to be suppressed, what kinds of reasons would be unacceptable. From an impartialist point of view, however, Ronald Dworkin's rider that the people behind the veil of ignorance know that redheads have the truth is a problem. The impartialist position is unconditional. Rather than use Rawls' system, the chapter shows that impartialist theory produces an epistemology which is sceptical about religious belief. The religious and scientific epistemological issues we have just discussed suggest the question of what, if anything, impartialism has to say about epistemology. One important application of theories about what we can know is in the justification of what ought to be taught to the young people of a society.