Aristotle called this kind of attitude “enlightened selfishness” .Zoroaster said: “Doing good to others is not a duty. It is a joy, for it increases your own health and happiness.” And Benjamin Franklin summed it up very simply-"When you are good to others,” said Franklin, “you are best to yourself.” “No discovery of modern psychology,” writes Henry C. Link, director of the Psychological Service Centre in New York, “no discovery of modern psychology is, in my opinion, so important as its scientific proof of the necessity of self-sacrifice or discipline to self- realisation and happiness.”
