Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.

The fear of death follows from the fear of life. A man who lives fully is prepared to die at any time.

知识是灵魂的粮食。

The energy transition cannot happen without the metals we mine.

过去是一个异国；他们在那里做事的方式不同。

理解过去对于塑造未来至关重要。