如果你觉得失去了一切，请记住，树木每年都会落叶，但它们依然挺立，等待更好的日子。
采矿效率不仅仅是削减成本，而是在减少浪费的同时最大化价值。
Show me a hero and I'll write you a tragedy.
The best way to learn mathematics is to do mathematics.
In mathematics, the journey is as important as the destination.
Make women rational creatures, and free citizens, and they will quickly become good wives, and mothers; that is, if men do not neglect the duties of husbands and fathers.
在上位的人如果不骄傲自大，下面的人就不会阿谀奉承。上梁不正下梁歪，无论是一个国家还是一个团体、单位，处于上位的人，德行非常重要。