This sentence means that even if you have experienced the ups and downs of the world and read all the vicissitudes of the world, you can still feel pity when you bend down and see the grass growing and the spring breeze is green.
This sentence comes from Ma Yifu's Kuang Yi Ting Kou Zhan. The full text is as follows:
When you know what the world is, the country is still here. When you board, you are a stranger, and you have a legacy in your funeral.
I've learned that I'm a great man, but I still pity the grass and trees. Send bird prints in the sky, leave illusions and human spirits.
this is a realm, which means that you have understood the vastness and complexity of the world, but you still haven't abandoned your love for nature beyond subtlety. This is a human nature. For example, some people, once they see a big event, tend to disdain the small things in daily life. Some people are different. On the one hand, he has seen great things, but the basic human nature is intact. What is the fundamental difference between the two people? In fact, it is "the heart of awe." No matter how great your skill is, you can't escape the bondage of nature and yourself. Therefore, we should have awe of nature and humanity. ?
Extended information:
The meaning of the first half of this sentence not only refers to the unpredictable and boundless nature and the whole world, which is beyond human reach. It also means that the owner's energy is strong and he can easily turn over Gan Kun. It also means that the master has seen through all negative matters such as ugliness in the world, hatred and separation. Standing on a high place, you can look down at the low place. This is a kind of mind and realm, and it is also a kind of gentleness. The more experience you have, the deeper you feel that it is difficult for a person's insights to jump out of his level and position. The questions asked and the answers sought are often selfish. If you want to bend down and do things, you must stand on a high place first.
Ma Yifu was the first person in China to introduce Marx's Das Kapital, and was called the "Three Sages of Modern Times" (or "Three Sages of Neo-Confucianism") together with Liang Shuming and Xiong Shili. He was one of the early representatives of modern Neo-Confucianism, the lyricist of School Song of Zhejiang University, and the former professor of Zhejiang University. He has profound attainments in ancient philosophy, literature and Buddhism, and is good at calligraphy. He combines Zhang Cao and han li into one, forming his own family. He was invited by Cai Yuanpei to teach in Peking University. After the founding of the People's Republic of China, he served as director of Zhejiang Literature and History Research Museum and deputy director of central research institute of culture and history, and was a special representative of the second and third Chinese People's Political Consultative Conference Committee.
Reference: Baidu Encyclopedia-I have learned that I am a great man, but I still pity the grass and trees.