Anti-evolutionists always quote the first part about the eye, and then go on to cut out the entire rest of that quotation, where Darwin goes on to explain how, even if it seems improbable, the eye did, indeed evolve.
"Yet reason tells me, that if numerous gradations from a perfect and complex eye to one very imperfect and simple, each grade being useful to its possessor, can be shown to exist; if further, the eye does vary ever so slightly, and the variations be inherited, which is certainly the case; and if any variation or modification in the organ be ever useful to an animal under changing conditions of life, then the difficulty of believing that a perfect and complex eye could be formed by natural selection, though insuperable by our imagination, can hardly be considered real. How a nerve comes to be sensitive to light, hardly concerns us more than how life itself first originated; but I may remark that several facts make me suspect that any sensitive nerve may be rendered sensitive to light, and likewise to those coarser vibrations of the air which produce sound." (Darwin 1872, 143-144)
Topic: A SHORT WORD ON THE THEORY OF EVOLUTION (Read 3476 times)