The personal example of a teacher is the most useful sunshine that nothing can replace for the soul of young people.
The ultimate search engine would understand everything in the world. It would understand exactly what you meant, and it would give you back exactly what you wanted.
计算理论为理解什么可以计算、什么不能计算提供了基础。
The future is not something we enter; it's something we create.
The safest way to double your money is to fold it over once and put it in your pocket.