Gaozi claims all innate instincts equal human nature. Mencius uses a white analogy to expose his flaw: if inherent traits define nature, dogs, oxen and humans would share identical essence. This refutes equating human nature with mere animal instincts and highlights humanity’s unique moral core.
Gaozi compares neutral human nature to water flowing east or west as channels guide it. Mencius counters that water naturally flows down, meaning humans innately lean toward good; evil only arises from external forces twisting one’s original nature.
Gaozi compares human nature to willow wood and morality to carved vessels, claiming benevolence and righteousness are artificial restraints. Mencius refutes this analogy, arguing morality should grow naturally from innate human goodness instead of mutilating one’s nature.
Mencius distinguishes royal kinsmen ministers from unrelated ones. Kinsmen may replace a repeatedly unrepentant ruler after remonstrance, while outsider ministers resign if their earnest advice fails, stressing different political duties tied to blood bonds.
Mencius describes expanding friendship from local to global virtuous scholars, then “befriending ancient sages” spiritually. He puts forward the literary critical principle: readers must grasp writers’ lives and their eras to fully understand their poems and books.
Mencius argues scholars must not attach to lords as dependents. They may accept ruler’s relief but not unearned personal gifts. True respect for worthies means steady material support plus official power, not frequent trivial favors that humiliate virtuous men like Zisi.
Mencius states scholars may take low-paid minor posts to escape poverty, as Confucius did managing stores and pastures. Two moral rules apply: low-ranking officials must not meddle in state affairs, while high officials shame themselves if they fail to uphold their ideals.
Mencius stresses reverence in social exchanges and accepts ritual-compliant gifts, yet rejects stolen loot from murderers. He distinguishes criminal robbers from exploitative lords, explaining Confucius took office for three pragmatic reasons to gradually promote the Dao before departing.