Sima Tan

Han dynasty court historian and father of the great historian Sima Qian, who wrote the Treatise on the Six Schools of Thought — the earliest systematic overview of pre-Han philosophical schools.

Treatise on the Six Schools: the first systematic philosophical classification of the Yin-Yang, Confucian, Mohist, Legalist, Logician, and Daoist schools, arguing Daoism is superior because it synthesizes the others' insights without their dogmatism.