An example of an epigraph for 'Flowers for Algernon'?

The epigraph given by the author was from Plato, and said in part:

"Any one who has common sense will remember that the bewilderments of the eye are of two kinds, and arise from two causes, either from coming out of the light or from going into the light, which is true of the mind's eye, quite as much as of the bodily eye."