She was silent and still for a long time.
"I must have known," she said. "I must have known all the time, without admitting it to myself."
"I'm sorry, Nina."
Her strong arm tightened around him. Her answer was steady:
"We must have hope, because there is so much to learn. But if our child cannot see...."
Her voice shook a little, then went on firmly,
"... If our child cannot see, we must find a Braille for the psi-blind! And we will walk together ... as long as we can ... on our frontier ... of infinity."