Xu Gan

Xu Gan (Chinese: 徐幹, pinyin Xú Gàn, 171 – March or April 218?), courtesy name Weichang (偉長), was a Chinese philosopher, poet and official of the late Eastern Han dynasty, and one of the "Seven Scholars of Jian'an". He is best known in the West for his discourse on the relationship between the names and actualities, preserved in his treatise Zhonglun (中論), or "Balanced Discourses".