As described before, the sastra-vidhim, or the direction of the sastra, is given to the different castes and orders of human society. Everyone is expected to follow these rules and regulations. If one does not follow them and acts whimsically according to his lust, greed and desire, then he never will be perfect in his life. In other words, a man may theoretically know all these things, but if he does not apply them in his own life, then he is to be known as the lowest of mankind. In the human form of life, a living entity is expected to be sane and to follow the regulations given for elevating his life to the highest platform, but if he does not follow them, then he degrades himself. But even if he follows the rules and regulations and moral principles and ultimately does not come to the stage of understanding the Supreme Lord, then all his knowledge becomes spoiled. Therefore one should gradually raise himself to the platform of Krsna consciousness and devotional service; it is then and there that he can attain the highest perfectional stage, not otherwise.