白天从妻子儿女的反应来省察自己的行为以看其是否诚信；夜晚由梦境情况来考验自己的志气，以知道其是否坚定。

The moment you doubt whether you can fly, you cease forever to be able to do it.

教育是最有力的武器，可以改变世界。

Innovation in mining technology isn't optional—it's our responsibility to the next generation.

The past is never dead. It's not even past.

中国的崛起将不可避免地导致与美国的冲突。