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 .
If you look, you will find that I have never quoted anything but the Upnishads. And of the Upnishads, it is only that one idea, strength. The quintessence of the Vedas and Vedanta and all lies in that word.