A man is born gentle and weak. At death, he is hard and stiff. Green plants are tender and filled with sap. At death, they are withered and dry. Therefore, the stiff and unbending is the disciple of death, and the gentle and yielding is the disciple of life.
LaoziUnder heaven all can see beauty as beauty only because there is ugliness. All can know good as good only because there is evil. Therefore having and not having arise together. Difficult and easy complement each other. Long and short contrast each other. High and low rest upon each other. Voice and sound harmonize each other. Front and back follow one another.
Laozi