Epistemologists have not usually had much to say about believing ‘in’, though ever since Plato's time they have been interested in believing ‘that’. Students of religion, on the other hand, have been greatly concerned with belief ‘in’, and many of them, I think, would maintain that it is something quite different from belief ‘that’. Surely belief ‘in’ is an attitude to a person, whether human or divine, while belief ‘that’ is just an attitude to a proposition? Could any difference be more obvious than this? And if we over-look it, shall we not be led into a quite mistaken analysis of religious belief, at any rate if it is religious belief of the theistic sort? On this view belief ‘in’ is not a propositional attitude at all.