计算复杂性的概念不仅仅是我们能计算多快，还包括理解什么是可以计算的极限。
数学是人类精神最美丽和最强大的创造。
Fisheries should not only pursue economic benefits but also focus on ecological and social benefits.
渔业不仅要追求经济效益，更要注重生态效益和社会效益。
返祖现象是理解犯罪行为的关键。
Always demand a deadline. A deadline weeds out the extraneous and the ordinary. It prevents you from trying to make it perfect， so you have to make it different. Different is better.
The best way of learning about anything is by doing.
