Sulüzi 素履子

Sulüzi 素履子 "The master with the straw sandals" is a philosophical treatise by the Tang-period 唐 (618-907) scholar Zhang Hu 張弧. Nothing is known about Zhang's life.

In his book, he explains 14 terms known from Confucian philosophy, namely the Way (dao 道), virtue (de 徳), loyalty (zhong 忠), filiality (xiao 孝), kindness (ren 仁), righteousness (yi 義), wisdom (zhi 智), trust (xin 信), rites (li 禮), music (yue 樂), wealth and rank (fugui 富貴), poverty and low status (pinjian 貧賤), fairness (ping 平), and instability (wei 危). The original book was only 1 juan long, but the received version is divided into 3 juan. It has never attracted a wide readership and is not mentioned in contemporary bibliographies. The philosophical and literary level is not very high, and therefore, it is only preserved in very few copies after the Song period 宋 (960-1279). It has been included in the series Siku quanshu 四庫全書 because it quotes from the Confucian Classics. There is a print from the Ming period 明 (1368-1644) which was stored in the library of Ma Yujia 馬裕家 in the 18th century.