The best solutions often come from listening—to nature, to science, and to the people on the ground.
释义:日月想要明亮,浮云遮蔽了它们;河水想要清澈,沙石使它变污浊;人的性情想要平和,嗜好和欲望会损害了它。
Contentment is natural wealth,luxury is artificial poverty.