Everyone is in favor of free speech. Hardly a day passes without its being extolled， but some people's idea of it is that they are free to say what they like， but if anyone else says anything back， that is an outrage.

"Ein Buch zu schreiben ist wie eine Reise in ein unbekanntes Land."

我们应该把所有法则或理论都视为假设或推测。

Diversity in mining isn't optional—it's essential for growth.