Enlightened self-interest is a philosophy in ethics which states that persons who act to further the interests of others (or the interests of the group or groups to which they belong), ultimately serve their own self-interest.
It has often been simply expressed by the belief that an individual, group, or even a commercial entity will "do well by doing good".
EG, you get a better
chance at pursuing your own happiness when you live in a highly civil society where police, defence, education, healthcare and a welfare safety net for those who have fallen on hard times* is provided and paid for by taxes. *So that in the absence of an employer who wants them or a physical ability to work at all, they do not have to turn to crime or prostitution