We stand before this great world. The truth of our life depends upon our attitude of mind towards it - an attitude which is formed by our habit of dealing with it according to the special circumstance of our surroundings and our temperaments. It guides our attempts to establish relations with the universe either by conquest or by union, either through the cultivation of power or through that of sympathy. And thus, in our realization of the truth of existence, we put our emphasis either upon the principle of dualism or upon the principle of unity.