心理学必须是一门纯粹描述性的科学。
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.
孔子说:“君子通晓道义,小人通晓私利。”
The customer may not always be right, but they always come first.
我不追随潮流,我创造潮流。