The world may be mean, but people don’t have to be, not if they refuse.

Certification programs are more than stickers on wood products; they represent a promise to our planet.

逻辑学研究不仅仅是关于规则，更是关于理解思维的结构。

If you say you want to automate cars and save people’s lives, the skills you need for that aren’t taught in any particular discipline. I know – I was interested in working on automating cars when I was a Ph.D. student in 1995.

用心栽花、施肥、灌溉，花却总是不开；无意间将柳条插在地上，却长成了郁郁葱葱的柳树。

先天真阳的萌动本是无为自然的，一旦刻意追求就落入后天人为的机巧。

证明的严谨性将数学与所有其他科学区分开来。

"A play is a question posed to the audience."

In international trade, a country should specialize in the production of goods for which it has a comparative advantage, and trade with other nations to maximize overall economic welfare.