He says that no one really knows about the gods and other things he is telling us about; rather, even if you are lucky enough to believe the truth, you won’t know (§186). This is just as revolutionary as his ideas about God. He’s distinguishing between believing something and really knowing it, a distinction which will be tremendously important down the line when we get to Plato, for example. In fact, this is important for philosophy as a whole: the attempt to sort out what we can know from what we merely believe.
