"What good is the warmth of summer, without the cold of winter to give it sweetness."

真正的数学家始终是学生，永远在学习。

Diplomacy is not just about focusing on problems, but more importantly, finding opportunities and ways to solve them.

Take a simple idea, and take it seriously.

"The mind is everything. What you think you become."

Quality is remembered long after price is forgotten.

当事人应置身于利害之外，提出倡议的人则应设身于利害之中，才能知道利害得失。