Lao Tzu's Tao Te Ching (《道德經》) says, "Heaven and earth are not kind, and they take everything as regurgitations; the sage is not kind, and he takes the people as regurgitations", which is easy to be misunderstood. In fact, it only emphasizes that "heaven and earth" nurtures all things in accordance with nature, and does not expect them to reciprocate; and the "sages" (rulers) should not expect the people to be grateful for their unquestioning love and care.　The so-called "unkindness" means "not to be regarded as benevolence"; therefore, the wind and rain, the drought and flood, or the wind and sunshine are not to be regarded as benevolence.