What I mean by the common good is that we understand we're all part of something bigger than ourselves, that we live in societies together and must help take care of one another because you never know when you're going to need to be taken care of by others. And it's not enough to say that your family or your church is going to take care of you. Societies are collective entities, we're meant to be connected to one another; the function of government is to administer that connection.