I cannot remember how I felt when the light went out of my eyes. I suppose I felt it was always night and perhaps I wondered why the day did not come.

Few pleasures there are indeed without an aftertouch of pain, but that is the preservation which keeps them sweet.

Every one of us is blind and deaf until our eyes are opened to our fellowmen, until our ears hear the voice of humanity.

My friends have made the story of my life. In a thousand ways they have turned my limitations into beautiful privileges.

What a blind person needs is not a teacher but another self.

Now I feel as if I should succeed in doing something in mathematics, although I cannot see why it is so very important. . . The knowledge doesn't make life any sweeter or happier, does it?

Joy is a spiritual element that gives vicissitudes unity and significance.