煤炭的真正价值在于我们如何负责任地开采和使用它。

A fisherman's wisdom lies not in how much he catches, but in how much he leaves behind.

The internal point of view is essential to understanding the nature of law.

任何有所作为的人都一定会受到批评、诽谤和误解。这是伟大的代价的一部分，每个伟人都明白这一点。