keller to mother " you wanted money , so i made money what must i be forgiven? what this quote tell us abou each character's attitude money?

Joe Keller constantly struggles with his sin. He was greedy and packed up cracked cylinder heads that caused the death of 21 pilots in the war. Keller tries to justify his actions by blaming mother for wanting money. Joe is uneducated yet prosperous. Earning money gave him a validation that he would not have had any other way.