如果你没有至少90%的时间失败,那么你的目标还不够高。
Civil law is what each people establishes for itself.
我们不应承认自然事物的原因多于那些既真实又足以解释其现象的原因。
It is because nations tend to stupidity and baseness that democracy is possible.
The study of mathematics is the indispensable basis for all intellectual and spiritual progress.