美国 现代美国  (1924 AD～2003 AD)

 Economics Shangqi： 《幸福与成功的简单法则：让兔子教猪唱歌》 Read works of Donald O. Clifton at 百家争鸣

　　Ph.D., American scholars and businessmen. By the American Psychological Association as "the dominant theory of the Father" and "God of success psychology." Gallup served as chairman for many years. In addition to "edge off", but also with others of the best-selling book, "Now, Discover Your Strengths" and "how full your bucket? "And so on.