Man was created in order that he might overcome that which animals have not overcome. And what is that? It is the ego. It is the ego that makes him selfish, that makes him try to get the best of his neighbor. This is the only real cause of all the disturbances of life, of all unrest, of all that we suffer, of all the harm that comes to us. The great enemy is the ego, the selfishness, manifested in husband, wife, son, daughter, friend, neighbor, or servant.