By the end of this second day of wasted effort, scrabbling and squirming over pressure-blocks and up ice-cliffs always to be stopped by a sheer face or overhang, trying farther on and failing again, Ai was exhausted and enraged. He looked ready to cry, but did not. I believe he considers crying either evil or shameful. Even when he was very ill and weak, the first days of our escape, he hid his face from me when he wept. Reasons personal, racial, social, sexual - how can I guess why Ai must not weep? Yet his name is a cry of pain.