The arithmetic of algebraic groups is a central theme in the Langlands program.

"The past is always present, shaping who we are in ways we don’t always understand."

写作是一种乐观的行为。如果你觉得它不重要，你就不会费心去做。

【解释】在狭窄的路上行走，留一点余地让别人走；遇到美味可口的食物，留出三分让给别人吃，这是立身处世最快乐的方法。