Helen Keller on the blind

It is because we know that these ambitions and capabilities can be fulfilled that we are working to improve the condition of the adult blind. You cannot bring back the light of the vacant eyes; but you can give a helping hand to the sightless along their dark pilgrimage. You can teach them new skill. For work they once did with the aid of their eyes you can substitute work that they can do with their hands. They ask only opportunity, and opportunity is a torch in the darkness. They crave no charity, no pension, but the satisfaction that comes from lucrative toil, and this satisfaction is the right of every human being.