Students must exercise constant watchfulness over their feelings and reactions. They must keep out selfishness, envy, anger, greed and other such evil tendencies from entering their minds. These are nets which entrap the person. These vices overwhelm and subdue the holiness of man, so that it cannot influence him any longer. The person will forget himself and behave like another worse individual, an individual caught in frenzy. He will blabber as his tongue dictates without regard to the effect - good or evil. He will engage his hands in work that the hands favour.. (V Vahini, p. 80)