求助一道AA题目

An argument from the head of HR dept. in an automobile company:    

Study shows that employees of not-for-profit organizations, compared to those of for-profit organizations, are more likely to perform well when their performance is not monitored and evaluated. Interviews with employees of not-for-profit organizations also show shat they have more motivation. They believe that their work is important to improve the society. They have personal reasons to perform well, even without financial returns. Therefore, our corporation should donate a significant portion of the overall profit to humanity, to increase the motivation and productivity of the employees, and thus to increase the profit. 

这题感觉很奇怪，那个huminity要怎么理解？请给一下思路！