Here's my take: It's good to be good to others, we should all understand that. So when someone who didn't understand that before sees the light it is a great r

Here's my take: It's good to be good to others, we should all understand that. So when someone who didn't understand that before sees the light it is a great reason to rejoice. Now we have one more person who sees the light. The brother who stayed at home should feel the same, if indeed he too has seen the light too. But if he didn't he didn't. I think that part of the story is really simply saying yes there are people like that too who do things only to gain a reward without understanding the intrinsic value of co-operation and love.