思考是最困难的工作，这也是为什么很少有人这么做。
Thought is the most difficult task, which is why so few engage in it.
"History is not just about dates and events; it's about the people who lived through them."
一本好书是通往另一个世界的门。
The past is a foreign country; they do things differently there.
The best time to plant a tree was 25 years ago. The second best time is today.
Life is short, but there is always time for courtesy.