采矿业的未来在于可持续性和技术。

A mathematician is a device for turning coffee into theorems.

所有行为都是由某种形式的驱力减少所驱动的。

The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.

我是一个非常积极的思想者，我认为这是我在困难时刻最帮助我的东西。