stance. During this first state of confused chaos, there came a change which resulted in substance. This substance changed to assume form. The form changed and became alive. And now it has changed again to reach death. In this it has been like the passing of the four seasons. And while she is thus lying asleep in the Universe, for me to go about weeping and wailing would be to show myself ignorant of Fate. Therefore I refrain." But how did one go about understanding nature? "The possible is possible. The impossible is impossible. The Tao makes thing and they are what they are. What are they not? They are not what they are not. Everything is something and is good for something. There is nothing which is not something or is not good for something. Thus it is that there are roof-slats and pillars, ugliness and beauty, the peculiar and the extraordinary. All these by means of Tao are united and become one," Therefore to understand nature, one identifies oneself with the universe. In other words, one became one with Tao. "The perfect man has no self; the spiritual man has no achievement; and the true sage has no name, because they are all one with Tao. Hui Shih said "The greatest has nothing beyond itself and is called the Great One." that is to say, Tao! Since Tao had nothing beyond itself, it was incomprehensible and inexpressible. Consequently, to become one with Tao, a person had to forget knowledge, or as the Taoists put it, to have knowledge which was not knowledge. "Through cultivation of one's nature, one returns to one's natural ability. Having returned to natural ability, one becomes identified 、