What is Yan Zhenqing's poem "Encouraging Learning"?

Men should study.

I don't know how to study hard early, but I regret learning late.

"Encouraging Learning" is the first article in Xunzi. Also known as persuasion. Persuasion is to encourage learning. This paper systematically discusses the theory and method of learning. The first part (the first paragraph) discusses the importance of learning; The second half (the second and third paragraphs) discusses the steps, contents and methods of learning.

Xunzi believes that learning first needs to cultivate moral temperament, maintain the quality of single-mindedness, specialize in learning a technology to achieve a crash (learning a crash), and then maintain perseverance and perseverance is the correct learning direction; Only by starting from the beginning to the end and never giving up halfway can we achieve a complete and pure spiritual realm.