If you think only of yourself, if you forget the rights and well-being of others, or, worse still, if you exploit others, ultimately you will lose. You will have no friends who will show concern for your well-being. Moreover, if a tragedy befalls you, instead of feeling concerned, others might even secretly rejoice. By contrast, if an individual is compassionate and altruistic, and has the interests of others in mind, then irrespective of whether that person knows a lot of people, wherever that person moves, he or she will immediately make friends. And when that person faces a tragedy, there will be plenty of people who will come to help.
— Dalai Lama