挑战让生活变得有趣;克服挑战让生活变得有意义。
We are all walking archives of evolutionary history.
We are all branches on the great tree of life.
释义:观察天下的造化之道,四季周而复始不变,圣人能够体认到这种玄妙的道理并用以教化众生,从而为人民所使用。