Concerning the gods, I have no means of knowing whether they exist or not or of what sort they may be. Many things prevent knowledge including the obscurity of the subject and the brevity of human life.

可持续性不仅是一种趋势，更是一种责任。

可持续性不仅仅关乎环境；它关乎为所有利益相关者创造持久价值。