Service to others is the rent you pay for your room here on earth. (Muhammad Ali, late boxing champion)
Ali’s statement may not be a new or unusual philosophical pronouncement. In fact, it’s quite simple and does suggest a sound life principle. We are not alone on this planet nor are we designed to live in isolation. So, our interaction with others should not be one-sided, always looking out only for our own interests. Serving others is a rewarding pursuit.
You, my brothers and sisters, were called to be free. But do not use your freedom to indulge the flesh ; rather, serve one another humbly in love. (Galatians 5:13)