The forest doesn't need us, but we need the forest—this truth should guide every decision we make in forestry.

A moral being is one who is capable of reflecting on his past actions and their motives.

诗歌不是奢侈品，而是必需品。

积极心理学不是一种奢侈品；它是美好生活的必需品。

人没有权利杀害他的兄弟。他穿着制服这样做也不能成为借口。

AdS/CFT对应是理解量子引力的有力工具。