"Books are the quietest and most constant of friends."

林业创新不是可选项，而是生存的必需。

Sustainability is the future of quarrying, and we must act now.

The sun is shining in the sky, there ain't a cloud in sight.

目标不是永远活着，而是创造一些能够永存的东西。

To lose a language is to lose a way of seeing the world.

"Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence."

弦理论的数学美感表明它必须是自然界终极描述的一部分。