Haw thought about going back again to Cheese Station C to see if he could find Hem -- assuming that Haw could find his way back there. If he found Hem, he thought he might be able to show him how to get out of his predicament. But Haw realized that he had already tried to get his friend to change.
Hem had to find his own way, beyond his comforts and past his fears. No one else could do it for him, or talk him into it. He somehow had to see the advantage of changing himself.
Haw knew he had left a trail for Hem and that he could find his way, if he could just read The Handwriting On The Wall.
He went over and wrote down a summary of what he had learned on the largest wall of Cheese Station N. He drew a large piece of cheese around all the insights he had become aware of; and smiled as he looked at what he had learned: