"Work for work's sake. There are some who are really the salt of the earth in every country and who work for work's sake, who do not care for name, or fame, or even to go to heaven. They work just because good will come of it. There are others who do good to the poor and help mankind from still higher motives, because they believe in doing good and love good. The motive for name and fame seldom brings immediate results, as a rule; they come to us when we are old and have almost done with life. If a man works without any selfish motive in view, does he not gain anything? Yes, he gains the highest. Unselfishness is more paying, only people have not the patience to practice it. It is more paying from the point of view of health also. Love, truth, and unselfishness are not merely moral figures of speech, but they form our highest ideal, because in them lies such a manifestation of power."

- Swami Vivekananda, "Karma in its Effect on Character" (Dec 13, 1895, New York Vedanta Society), Karma Yoga, Complete Works: Vol 1