Innovation in coal mining isn't about reinventing the wheel, but about making the wheel more efficient and environmentally friendly.
the only thing we have to fear is fear itself.
你可以撼动星辰。你可以做任何事,只要你敢。而在内心深处,你也知道这一点。这就是最让你害怕的地方。
食物是连接我们所有人的通用语言;负责任地生产它是我们共同的使命。
The only way to learn mathematics is to do mathematics.