The secret of the working of the whole universe is in the duality of nature. In all aspects of nature two forces are working, and it is their action which balances life. Therefore in the path of attainment the power which manifests as enthusiasm or action is not sufficient; knowledge and the capacity for work are also necessary. Very often a person fails to succeed with all his enthusiasm and power of will; and the reason is that father by the power he possesses he pushes his object along like a ball, or with his strength he breaks up the rock which he really needs whole, and not in pieces. Power is no doubt most necessary in attainment, but in the absence of knowledge power may prove helpless.