Sustainability isn't an option—it's a responsibility we owe to future generations.

To write is to resist the erosion of time, to fight against oblivion.

做一件事如果琢磨太久，就永远做不成。

"In mathematics, you don't understand things. You just get used to them."

"We are all haunted by the past, and the past is always present."

The key to long-term success is balancing short-term performance with sustainable growth.

Critical comments by students should be taken in a friendly spirit， accumulation of material should not stifle the student’s independence.

世界变化非常快。大不再能打败小，而是快的打败慢的。