文化进化的研究必须考虑社会的内部动态和外部环境约束。

In chemicals, our greatest challenge is also our greatest opportunity: meeting global needs while protecting the planet.

世界称之为不道德的书籍，是那些揭示了世界自身羞耻的书籍。

You can't change what's going on around you until you start changing what's going on within you.

Listen to other's opinions, but make your own decisions.

最好的艺术是改变你的艺术。