Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.

语言是存在之家，人在其中栖居。

Focus on directions rather than destinations. Who knows their destiny？ But maintain the right direction and you’ll arrive at where you want to go.

这不是没有恐惧。而是克服它。有时候你必须突破并保持信念。

"We are all searching for something, but sometimes what we are searching for is already within us."

Science is a collaborative symphony, not a solo performance.