时间是我所有作品中看不见的材料。

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

出生就是在一座岛屿上遇难。

Sustainability isn't a choice—it's our responsibility to the next generation.

Art is the language of the soul.

白色是最奇妙的颜色，因为其中可以找到彩虹的所有颜色。