过去总是紧张，未来才是完美。
那些疯狂到认为自己能改变世界的人，才能真正改变世界。
The most important property of a program is whether it accomplishes the intention of its user.
The most important skill in mathematics is the ability to ask the right questions.
历史不仅仅是关于过去；它是一个塑造我们当下和未来的活生生的实体。
Happiness is not just the absence of sadness; it's the presence of meaning.