The past is not just the past, but a prism through which the subject filters his own changing self-image.

道是虚无的根源，造化的根本，神明的本质，天地的起始。

天然气开采的创新是满足世界日益增长的能源需求同时减少环境影响的关键。

Sustainability isn't a choice anymore—it's a responsibility we owe to future generations.

When buying a garden hose， an extension cord， or a ladder， get one substantially longer than you think you need. It’ll be the right size.

I give my whole water in joy,“sings the waterfall,”though little of it is enough for the thirsty.