Mr. Wang said: I can't learn. Green is taken from blue, and green is blue; Ice and water can do it, but it is colder than water. Wood is straight in the rope and is considered as a wheel. Although it is violent, it is natural to let it stand still. Therefore, the wood is straight by the rope, the gold is sharp, the gentleman is knowledgeable, and he saves himself every day, so he knows clearly without fault. So, if you don't climb the mountain, you don't know the height of the sky. Don't face the deep stream, I don't know the thickness of the ground; I didn't know the greatness of learning until I heard the last words of my late king.

-"Xunzi, Encourage Learning"

Supplement: (1), Mencius said: "Confucius climbed the East Mountain but was small, and climbed Mount Tai but was smaller than the world. Therefore, it is difficult for people watching the sea to swim in the water, and it is also difficult for people at the gate of saints to speak. If you have the ability to watch water, you must watch it. The sun and moon are bright, and the light will shine. Running water is also a thing, but it is not a mirror; The ambition of a gentleman is also in the Tao, and it cannot reach the chapter. "

-"Mencius wholeheartedly"

Mencius said, "Confucius felt that Lu was small when he climbed Dongshan, and that the world was small when he climbed Mount Tai. Therefore, it is difficult for people who have seen the sea to admire the ordinary water, and it is difficult for people who have studied saints to be attracted by ordinary words. There is a way to look at the water, so we must look at its grandeur. The unparalleled brilliance of the sun and the moon can shine in even a small gap. The nature of running water will not run away unless it is full of puddles. The reason why a gentleman is interested in the right path of life is that he will not understand if he is not clear.

② Wang Yue in Du Fu's works

What a magnificent scenery Mount Tai is! Out of Qilu, green peaks can still be seen.

The magical nature brings together thousands of beautiful mountains in the south and the separation between morning and dusk in the north.

Layers of white clouds, cleaning the gully on the chest; The flat bird flew into the eye socket.

Try to climb to the top of the mountain: it dwarfs all the peaks under our feet.