释义：内心纷杂不净，难以领悟真理；意志不坚定，难以成就功业。

You have to write the book that wants to be written. And if the book will be too difficult for grown-ups, then you write it for children.

When it's tough， will you give up， or will you be relentless？

你必须对自己的能力有信心，然后足够坚强地坚持到底。

善行本身就是一种幸福的行为。

Mathematics is the foundation upon which all sciences are built.

小型渔民和大型水产养殖企业必须找到共同点——海洋足够容纳两者。