Pride

Sometimes swallowing your pride is necessary for survival.

In the book, Walter wants to give into Mr. Lindner's offer so that he can get his family's money back after he is the one that gave it up. Sometimes it is best to just swallow your pride and do that, but in this case, it's just humiliating the family. Walter thinks he doing the right thing because he is getting the money back, but it turns out that they are still successful without giving up the family pride. The family still turns out to be successful in the end.