最好的采石场不仅在地面上留下洞，还在社区中留下价值。

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

So happiness is the most popular word we have heard through the past two years. Happiness is not only related to personal experiences and personal values, but also, it's about the environment.

大众媒体是反中介和不及物的。它们制造非交流——这是它们的特征，如果人们同意将交流定义为一种交换，一种言语和回应的相互空间，因而也是一种责任的空间。

Science fiction is the literature of change.

He who wants to do good knocks at the gate； he who loves finds the gate open。

Love is the only thing we take with us when we die. It makes death so easy.