言语有力量，但沉默可能更有力量。
A good mathematician should be both rigorous and imaginative.
From time to time you may stumble， fall， you will for sure， count on this， no doubt， you will have questions and you will have doubts about your path. But I know this， if you’re willing to listen to， be guided by， that still small voice that is the G.P.S. within yourself， to find out what makes you come alive， you will be more than okay. You will be happy， you will be successful， and you will make a difference in the world.
几何学是关于永恒存在的知识。
A car is no longer just a means of transportation, but a mobile living space.