孟子所論的道德動機當中「情」發揮了重要作用，道德之情當中包含了理性認知，道德推理當中也有情的介入，情與理在孟子那裡並不是斷裂的。在齊宣王與孟子的「情理」論辯當中，肯定情感論者認為，齊宣王的道德推導中含「情」，而否定情感論者則認為齊宣王的道德推理中無「情」。本文則試圖為孟子「情」論進行四個方面的辯護：第一，孟子論「情」是前後矛盾的嗎？第二，憐憫之情到底是如何「推」的？第三，含情的道德動機是「內在」的嗎？第四，道德動機中的「情理」如何互動？孟子之情當中本身就蘊含了理性，這是孟子道德動機的「情理」真義。

The emotions play so important roles in moral motivation among Mencius’ contexts. Moral emotions contain moral cognition, at the same time, emotions are engaged in moral reasoning. There is an emotion-rational structure in Mencius. In the interpretations of debate between Mencius and King Xuan, there are emotions in King’s moral reasoning in affirmative theory, but negativists think no emotional relation to reasoning. So I try to make four defenses for emotionism: 1. Is there a contradiction in emotion theory of Mencius? 2. How is sympathy pushed to the other？3. Is Mencius a motivational Internalist？4. How emotion-rational structure to operate？In short, the conclusion is no separation between emotion and reason in Mencius’ moral theory.