"Don't go against the farming season, the valley can't win food. If you can't count it, you can't eat it. When the axe gold enters the mountain, the trees can't be used, and five acres of houses are needed. The trees can be mulberry, and fifty people can have food and clothing. Chickens, dolphins and dogs are all domestic animals, so there is no time to waste. Seventy people can eat meat. A hundred acres of land, if you don't hurry, a few people in a family can be hungry. " "Food is the most important thing for the people" and "The granary knows etiquette, food and clothing know honor and disgrace". At any time, people must solve the problem of eating and drinking before they can engage in other things. In Mencius' view, if we can respect nature, conform to the law and not delay the four seasons of farming, then there will be a bumper grain surplus; Aquatic products such as fish and turtles can be enjoyed endlessly if they are not caught or netted. If the trees in the mountains are not cut down indiscriminately and given enough production time, then the wood will be inexhaustible. Here, Mencius has deeply realized the importance of adapting to nature. In order to survive, human beings must respect nature and obtain the necessary means of production. Only in this way can they really "live". "Whole grains, people eat for the sky." In fact, we now prohibit electric fishing, rivers stipulate that fishing is prohibited every year, and mountainous areas stipulate that mountains are closed every year, which is the unity of nature and man. Laozi said: "People should be everywhere, the land should follow the sky, the sky should follow the Tao, and the Tao is natural." The so-called "Tao is natural" means that it is not unnatural, but its nature and harmony. Source: Senior High School Students' Learning and Senior One Edition