The only way to learn mathematics is to do mathematics.
学习数学的唯一方法就是做数学。
To one who has faith, no explanation is necessary. To one without faith, no explanation is possible.
Sustainability isn't an option; it's a responsibility we owe to the next generation.
最成功的企业是那些真正关心员工的企业。
"The truth is not in the facts, but in the way we tell them."
A man who moralizes is usually a hypocrite, and a woman who moralizes is invariably plain.
译文：能写文章的人，善于引用名言，虽只寥寥数语，却起到了画龙点睛的作用，使文章读起来更加优美、更加动人。