It is essential for a righteous person to speak politely and sweetly. The worth of a commodity is judged by its qualities. Nobody values a commodity if it is lacking in basic qualities. The Plants which do not bear fruit are uprooted and thrown away. An electric bulb when fused becomes worthless and useless and is thrown away as it cannot transmit light. Similarly, to be polite, courteous and sweet are the greatest human virtues. Without these virtues, one is liable to be caste away from the category of man. Such a person is not better than a picture carved on the wall or a statue made of stone.