Man's greatest enemy is his ego which manifests itself in selfishness. Even in his doing good, in his kind actions, selfishness is sometimes at work. When he does good with the thought that one day it may return to him and that he may share in the good, he sells his pearls for a price. A kind action, a thought of sympathy, of generosity, is too precious to trade with. One should give and, while giving, close the eyes. Man should remember to do every little good action, every little kindness, every act of generosity with his whole heart, without the desire of getting anything in return making a trade out of it. The satisfaction must be in doing it and in nothing else.