Since ancient times there have been several interpretations of Confucius' ”Heaven produced the virtue that is in me.” Does this ”virtue (der2)” mean our human inner ”nature (xing4)” or outer behavior? What is the relationship between this (der2) and ”na-ture” in the ”Doctrine of the Mean” (zhong1-yong1)? Moreover, what are the correlations (if any) between ”Heaven produced the virtue that is in me” and ”What heaven has conferred is called nature?” The present paper focuses on these still undecided issues. First, I analyze the necessary features of ”virtue” and ”nature” in the ”Analects”. Then, I further explore the meaning of these terms in the light of the Confucian view of ”wisdom (zhi4)” and ”humaneness (ren2),” and the theory of ”sincerity (cheng2) and intelligence (ming2)” in the ”Doctrine of the Mean”. Finally, I conclude that human ”nature (xing4)” is the same as ”virtue (der2),” since ”Heaven produced the virtue that is in me.” This strongly sug-gests the Confucian (ru2chia1) origin of the notion that ”What hea-ven has conferred is called nature” in the ”Doctrine of the Mean”.