读未见书，如得良友；见已读书，如逢故人。
阅读未见过的书，如结识好朋友，情意和洽；重读已看过的书，如老朋友相晤，叙旧联谊。
Sustainable forestry is not an option; it's an obligation.
感性世界是智性世界的影像。
历史不是发生过的事，历史只是历史学家告诉我们的故事。
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
The essence of architecture lies in its ability to transform lives.
"Language is the first casualty of power."
