If you don't go against the farming season, the valley can't take food; If you can't count, you can't eat fish and turtles. Axe gold gets into the mountain in time, and mywood can't be used. Valley and fish turtles can't fight for food, and wood and wood can't fight for it, which makes people lose their lives and have no regrets. Keeping in good health and dying without regret is the beginning of kingly way. -"Mencius Hui Liang Wang Shang"

Mencius advocated saving resources and protecting the sustainable development of the ecological environment, that is, the idea of "keeping it at the right time" Mencius advised people not to fish with satin nets, so that smaller fish could continue to grow and reproduce; Logging should follow the prescribed season, conform to nature and meet the needs of sustainable utilization. Mencius taught people that the growth and reproduction of all animals and plants have ecological laws of development and growth according to seasonal changes, so we must conform to the laws and not try to break them. Furthermore, people must carry out agricultural production, logging, harvesting, fishing and hunting according to the ecological law of the growth and change of all things, and obtain the means of subsistence moderately. Don't overuse it, it will lead to the imbalance of ecological environment and lead to extinction.

If you get it, nothing will not last long; Nothing will disappear if you lose your support. -"Mencius Gaozi Shang"

Mencius emphasized the protection of natural resources while "advancing with the times". It is very important to "save", not only to take it in moderation, but also to minimize people's requirements for nature and maintain the original appearance of nature, which is what Mencius said: "You can take it, you can't take it, you can take it cheaply; It is unnecessary and harmful "("Mencius Li Lou "), which makes everything in nature flourish, harmonious and orderly, and maintains a good ecological circulation system.

There are rich ecological ethics thoughts hidden in Mencius' thoughts, and reviewing Mencius' ecological ethics thoughts is also very beneficial to the ecological construction of today's society. Mencius told us that while developing the economy, we should pay attention to "keeping pace with the times", conform to and protect nature, pursue eco-economic benefits on the premise of saving resources, energy and reducing pollution, and realize the coordination and unity of economy and environment in economic activities.