伊尹与周公，都是扶幼主的开国贤宰，也是旧时史家心目中的两尊偶像。可是周公有恐惧流言之危，伊尹的经历更复杂了，他曾经做过商汤的间谍，助商灭夏之后，又成为商之叛臣。孟子说“伊尹五就汤五就桀”，实非如旧往所说，起先还想夏桀改过，耐性等待。等待改过，为什么还要到? Yi Yin and Zhou Gong, are helping the founding father slaughtered young slaughter, but also the old icon in the eyes of the two historians. However, there was a fear of rumors about Zhou’s death. Yi Yin’s experience was even more complicated. He had been a spy of Shang-Shang and became a rebel against the merchants after he helped them eliminate the summer. Mencius said that “Yi Yin five soup on the fifth,” is actually not as the old saying, at first still want to change Xia Xia, patience waiting. Waiting for change, why should arrive?