“A sensible man will remember that the eyes may be confused in two ways - by a change from light to darkness or from darkness to light; and he will recognise that the same thing happens to the soul.”

“Any one who has common sense will remember that the bewilderments of the eyes 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; and he who remembers this when he sees any one whose vision is perplexed and weak, will not be too ready to laugh; he will first ask whether that soul of man has come out of the brighter life, and is unable to see because unaccustomed to the dark, or having turned from dakness to the day is dazzled by excess of light. And he will count the one happy in his condition and state of being, and he will pity the other; or, if he have a mind to laugh at the soul which comes from below into the light, there will be more reason in this than in the laugh which greets him who returns from above out of the light into the den. (Included in the introduction to "Flowers for Algernon" by Daniel Keyes)”

“Darkness may cover light, but that is not the same thing as putting it out. Whereas, to overcome darkness, all light need do is to exist.”

“Light does not come from light, but from darkness.”

“Light our fire and protect us from the dark, blah blah, light our way and keep us toasty warm, the night is dark and full of terrors, save us from the scary things, and blah blah blah some more.”

“But there is one thing you must remember, if you forget all else. There is no good or evil, save in the way you see the world. There is no dark or light save in your own vision. All changes in the blink of an eyelid; yet all remains the same.”