The meaning of earthly existence lies not, as we have grown used to thinking, in prospering but in the development of the soul.

写作的真正挑战不在于找到正确的词语，而在于揭示它们必须承载的真相。

"I’m not perfect. I make mistakes like everyone else."

历史研究不仅关乎过去，也关乎理解现在和预见未来。

"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."

Integrity is the foundation of the enterprise. We always adhere to treating people with sincerity and establishing our business with trust.

A mathematician's work is never done; there are always new questions to explore and new mysteries to uncover.