阅读是穿别人的鞋子走路；写作是留下自己的足迹。
Every mathematical problem has a solution; it just takes time and effort to find it.
成功的关键不仅仅是努力工作，而是聪明地工作。
The goal of education is not to increase the amount of knowledge but to create the possibilities for a child to invent and discover, to create men who are capable of doing new things.
塑料的真正成本不在于生产，而在于它的后续处理。