赏析：表达了一种顺应自然、随遇而安的心态，认为只有这样才能不受悲哀和欢乐的情绪影响。

心记得头脑试图忘记的东西。

Train employees well enough they could get another job， but treat them well enough so they never want to.

Don't write your name on sand, waves will wash it away. Don't write your name in sky, wind may blow it away. Write your name in the hearts of people, that's where it will stay.

研究涨落对于理解系统在平衡附近的行为至关重要。

阅读是不动的旅行，写作是让他人旅行。