But if it were a dualism of hostility and mutual exclusion, then the tree would have no chance to maintain its existence. The whole league of giant forces would pull it to pieces. It is a dualism of relationship. The more perfect the harmony with its world of the sun and the soil and the seasons, the more perfect the tree becomes in its individuality. It is an evil for it when this inter-relation is checked. Therefore life, on its negative side, has to maintain separateness from all else, while, on its positive side, it maintains unity with the universe. In this unity is its fulfilment.
In the life of an animal on its negative side this element of separateness is still more pronounced, and on that account on its positive side its relationship with the world is still wider. Its food is more fully separated from it than that of the tree. It has to seek it and know it under the stimuli of pleasure and pain. Therefore it has a fuller relationship with its world of knowledge and feeling. The same is also true in its case with regard to the separation of sex. These separations, and the consequent efforts after unity, have the effect of heightening the consciousness of self in animals, making their personality richer by their contact with unfore-
