If economists could manage to get themselves thought of as humble， competent people on a level with dentists， that would be splendid.

The most sustainable forest is one that provides value to people while maintaining its ecological integrity.

理论是灰色的，而生活之树常青。

I want to liberate America from all the things that hold people back.

电商的本质是零售，零售的本质是效率。