今天我们开采的石料必须留下让未来引以为豪的遗产。

设计中最难的部分是保持功能的简洁。

The past is always carried into the present by small things.

Quality is never an accident; it is always the result of intelligent effort.

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

可持续性不仅仅是一个流行词，它是负责任林业的基础。我们必须在经济增长和环境管理之间取得平衡。