Philosophy: ethics

The argument for immoral behavior needs hardly be made: when there are no rules to restrict your behavior, your chances of getting what

you want in life—a certain “worldly” notion of the good life, at least—is easier to achieve.
So what argument can be made for morality? How can we argue that the moral “good” is actually better than any immoral “good”? (Leave aside

all religious justifications of morality—let us pretend that we are all agnostics, and the existence of deities is moot.) Use what you

have learned this semester to prove that morality is better than immorality.