The sons of Aryaman are called Charshanis. The word Charshani literally means a cultivator. Its secondary sense given in the Vedic lexicon is one endowed with the discriminative faculty. The word Charshani is used in the Vedas for man. It is the equivalent of Arya or Aryan, the ploughman. But it is not as ploughmen or cultivators, that the Aryans had their high place in humanity, but as men endowed with the power of discrimination. And this we owe to Aryaman. This is why, though an Âditya, he is called the chief of Pitris by Sri Krishna. "I am Aryaman of the Pitris." — Bhagavat Gitâ. We have thus the first stage in life evolution, when the spiritual Jiva had to descend from the elemental to the mineral form. Next we have the second stage, when minerals passed through higher forms of life till the Human Kingdom was reached. Then we have the third stage, when men became endowed with the power of discrimination. In the exercise of the discriminative faculty men were helped by their elder brothers, the Rishis and Mahâtmâs of every period, and by Avatâras Who apeared from time to time. Then the ground was prepared for further evolution. The Sacred Injunctions or the Vedas were revealed to men to give them a sense of right and wrong, of duties and prohibitions. The Vedas also held out to the developed sense of men the charming prospect of life in Svarga Loka with its lasting and alluring enjoyments. This may be called the stage of Karma Kânda. In following the stages of human evolution we have come down to Vaivasvatu Manvantara. Side by side with the efforts made to raise humanity in the scale of evolution, sin was accumulating in the great Atlantean continent which spread over the whole of what we now know as the Bay of Bengal. The Atlanteans had acquired a mastery over the five forces of nature, which they used for selfish objects and against the cause and current of evolution. Then there was a great revolution in Nature. The great Atlantean Continent went down with its load of sins. The sons of Sagar, the Atlantean king, became buried under the great ocean, which overtook the doomed continent, and to this day the sea is called in India, "Sâgar" or relating to Sagar. There was a corresponding upheaval in the Himalayas, and the sacred river Gangâ streamed forth from their sides, inaugurating the spiritual regeneration of the Universe. Much of what we now know as India must have been raised up at the time, and on its sacred soil appeared the great Avatâra Râma, Who put an end to the disorganising, chaos-loving sons of Lankâ. The people of Lankâ were called Râkshasas as they were working towards the destruction of all order, all progress in the Universe, and rendered everything topsy-turvy in Nature.