Transience for Zen simply means change. It is a form in which life manifests itself. Where there is life there is change or Transience. Where there is more change there is more vital activity. Suppose an absolutely changeless body: it must be absolutely lifeless. An eternally changeless life is equivalent to an eternally changeless death. Why do we value the morning glory, which fades in a few hours, more than an artificial glass flower, which endures hundreds of years? Why do we prefer an animal life, which passes away in a few scores of years, to a vegetable life, which can exist thousands of years? Why do we prize changing organism more than inorganic matter, unchanging and constant? If there be no change in the bright hues of a flower, it is as worthless as a stone. If there be no change in the song of a bird, it is as valueless as a whistling wind. If there be no change in trees and grass, they are utterly unsuitable to be planted in a garden. Now, then, what is the use of our life, if it stand still? As the water of a running stream is always fresh and wholesome because it does not stop for a moment, so life is ever fresh and new because it does not stand still, but rapidly moves on from parents to children, from children to grandchildren, from grandchildren to great-grandchildren, and flows on through generation after generation, renewing itself ceaselessly.