Agriculture is the foundation of civilization, and we must treat it with the respect it deserves.

心理学必须展示心灵如何服务于有机体的需求。

As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.

The computing scientist's main challenge is not to get confused by the complexities of his own making.

Quality is not an act, it is a habit.

社会是由某些关系或行为方式联合起来的个体的集合，这些关系或行为方式将他们与那些不进入这些关系或行为方式不同的人区分开来。