One cannot but notice Plato's interest in prophecy and divination. He speaks disparagingly of the art and of those who practised it, yet it seems to have held some fascination for him. Moreover, he frequently uses the language of prophecy in a metaphorical sense, and it is this which I am to examine. Often, of course, this use is facetious, especially with the nouns ‘prophet’ and ‘prophecy’: he is ridiculing obscurity or playfully lending dignity to an obvious inference. But I suggest that this facetious usage is common enough to be in itself evidence for the familiarity of Plato with this way of thinking.