"The writer is a man who is always trying to capture the essence of life, the essence of the human condition, the essence of the world."

Profit without purpose is chemistry without catalysts - possible, but painfully slow and inefficient.

Life is short, and it's up to you to make it sweet.

我不认为每个人都应该成为数学家，但我确实相信许多学生没有给数学一个真正的机会。