during their first Tuesday, what does morrie tell mitch about his increasing dependency on others?

Morrie brings up the Koppel interview as they begin their discussion. He reminds his pupil that his biggest fear is having someone wipe his behind and that he knows that day is coming. He fears it because it is a sign of dependency. However, he'll try and enjoy the process, that it means he gets to be babied one more time in his life.