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

In all things， it is necessary to create a system.

小说是一面沿着大路行走的镜子。

The poet is a man who manages to be, in his own lifetime, what all men would like to be after their death.

Science is the art of making the complex understandable.

客户满意是我们公司最好的广告。

小说是揭示真相的谎言。

建筑师必须像雕塑家和科学家一样思考。