"Duty is good to the extent that it checks brutality. To the lowest kinds of men, who cannot have any other ideal, it is of some good; but those who want to be Karma-Yogis must throw this idea of duty overboard. There is no duty for you and me. Whatever you have to give to the world, do give by all means, but not as a duty. Do not take any thought of that. Be not compelled. Why should you be compelled? Everything that you do under compulsion goes to build up attachment. Why should you have any duty? Resign everything unto God. In this tremendous fiery furnace where the fire of duty scorches everybody, drink this cup of nectar and be happy."

- Swami Vivekananda, "Freedom" (Advanced karma yoga class, Jan 10, 1896, New York Vedanta Society), Karma Yoga, Complete Works: Vol 1