孔子雖未明言性善，但已肯定人心之仁與智，且有「天生德於予」的深切體悟，顯示了性善的強烈傾向。 到了《中庸》，就循此順利發展，將仁與智納入性體，並且指明「性」賦於天，乃宇宙之至誠。從而一一打通天人、物我的重重關節，由「無息」而規律而和諧，呈現以一誠流貫的中和（至善）境界，顯示了《中庸》性善觀的最特色與價值。

　　　　　Although Confucius hadn't advocated the view of men born good, he supported people are born of benevolence and wisdon. In addition, he deeply relized that "humanity is originally with moral, also with strongly tendency of men born good."In "The golden Mean," this kind of view with including benevolence and wisdom is complete sincerity in cosmos, Going through a lot of joints between cosmos & humans and objects & self, as well as from cosmic coursing infinitely to forming regularity harmonically, this paper would focus on this main speciality and value of mencius that men are born good, besides, the view with totally the island of goodness in manhood.