These eyes, tho' clear
  To outward view of blemish or of spot,
    Bereft of light, their seeing have forgot,
      Nor to their idle orbs doth sight appear
        Of sun, or moon, or star, throughout the year,
          Or man, or woman.  Yet I argue not
            Against Heaven's hand or will, not bate a jot
              Of heart or hope; but still bear up and steer
                Right onward.
 — John Milton
  Blindness