Innovation in coal mining isn't about reinventing the wheel, but about making the wheel more efficient and environmentally friendly.

Cada palabra es un mundo, cada verso un universo.

"A man is not old until regrets take the place of dreams."

The truth is always an insult or a joke.

最有力的故事是那些与我们自身经历共鸣的故事。

物理学家必须对自然法则的简洁与美怀有一种信念。