Socrates never suggests that the nature of the cave could be altered or that a civil society, a people, a demos, could do without false opinions. The philosophers who returned to the cave would recognize that what others take to be reality is only image, but they could not make any but the happy few able to see the beings as they really are. ... Or to put it in another way, the unwise could not recognize the wise. Men like Bacon and Descartes, by contrast, thought that it was possible to make all men reasonable, to change what had always and everywhere been the case. Enlightenment meant to shine the light of being in the cave and forever to dim the images on the wall. Then there would be unity between the people and the philosopher. The whole issue turns on whether the cave is intractable, as Plato thought, or can be changed by a new kind of education, as the greatest philosophic figures of the seventeenth and eighteenth century taught.