When the two mice tried their best to look for the New Cheese, the two littlepeople still stayed in Cheese Station C, in which there is no cheese, with their sweet dream.

However, at last, Haw figured out that they could not wait here any longer, they should get up the courage to go out and find their New Cheese. He said that to Hem, but Hem refused him because of his fear.

So Haw decided to go out into the maze himself. During his progress, he encountered many difficulties, and he wrote some words on the wall to encourage him to overcome difficulties. And on the way to cheese, Haw still thought about his friend--Hem, he had hoped to find enough Cheese to take some back to Hem and encouraged him to come out into the maze.

I think Haw is the one who deserves to think about.