当一个人开始长得像他的父亲时，他就知道自己正在变老。
A man knows when he is growing old because he begins to look like his father.
Language is not innocent. It carries the weight of history and power.
可持续性不是一种趋势，而是能源的未来。
You can't power a nation on wishful thinking.
做数学就是参与发现与猜想、直觉与灵感的过程。
没有实用性的创新只是噪音，农民需要真正的解决方案。