And also by those avocations by which the world is maintained, such as serving for wages, receiving taxes, merchandise, agriculture and tending of cattle and sheep. The (study of the) three Vedas, agriculture, trade and government constitute, as it is ordained by the wise, the professions of the twice-born ones; each order maintains itself by following the professions prescribed for it. When these callings are properly pursued, the world is maintained with ease. If however men do not righteously lead their lives, the world becomes lawless for want of Vedic merit and government. And if people do not follow their respective vocations, they perish. But by regularly following their professions, they acquire virtue.