In mathematics, you don't understand things. You just get used to them.
过去总是紧张的,未来是完美的。
Quality starts from the soil. Healthy earth grows healthy fruits.
Structured Programming supports the law of the excluded middle.
我们无权假设任何物理定律存在,或者即使它们至今存在,它们将来也会以类似的方式继续存在。