我们必须愿意失败，愿意犯错，愿意带着学到的教训重新开始。
Success is cool, but happiness is better.
权力的关键在于能够判断谁最适合为你服务，然后赢得他们的支持。
The personal example of a teacher is the most useful sunshine that nothing can replace for the soul of young people.
数学研究是一次进入未知的旅程，每一次发现都为新的谜题打开了大门。
Immediately pay what you owe to vendors， workers， contractors. They will go out of their way to work with you first next time.