我们开采的每一吨煤炭都必须以最小的环境影响创造最大的价值。

你唯一的限制就是自己设定的限制。

对意义的追求比对幸福的追求更重要

The most perfect education, in my opinion, is such an exercise of the understanding as is best calculated to strengthen the body and form the heart.

你不能害怕失败。这是你成功的唯一途径。

In time of war, when truth is so precious, it must be attended by a bodyguard of lies.

夜越长，梦越多。