黑眼圈

“Imagine mankind as dwelling in an underground cave with a long entrance open to the light across the whole width of the cave; in this they have been from childhood, with necks and legs fettered, so they have to stay where they are.

They cannot move their heads round because of the fetters, and they can only look forward, but lights comes to them from fire burning behind them higher up at a distance. Between the fire and the prisoners is a road above their level, and along it imagine a low wall has been built, as puppet showmen have screens in front of their people over which they work their puppets’ ….

’Now consider,’ said I ‘what their release would be like, and their cure from these fetters and their folly; let us imagine whether it might naturally be something like this. One might be released, and to walk and look towards the firelight; all this would hurt him, and be would be much too dazzled to see distinctly those things whose shadows he had seen before. What do you think he would say, if someone told him that what he saw before was foolery, but now he saw more rightly, being a bit nearer reality and turned towards what was a little more real? What if he were shown each of one was? Don’t you think he would be puzzled, and believe what he saw before was more true than what was shown to him now? " 

"Far more" said he.                                                                      Plato, The Republic,  Book VII.