1 Stay calm to cultivate your character, and be frugal to cultivate your virtue. Zhuge Liang

2 People often regard the environment around them as a free commodity, destroying it arbitrarily without knowing how to cherish it. Ganhaman

3 The earth gives the essence of matter to all people, but in the end, the reward it receives from people is the garbage of these materials. Whitman

4 The result of our going against nature is that we destroy the beauty of natural landscapes, the beauty of natural dynamics and the beauty of nature. Roman Cousins

5 I hope that every time I recall it, I won’t feel guilty about life. Guo Xiaochuan