RT Journal T1 The Origin and Differentiation of the Theories of Human Nature in Pre-Qin China A1 GUO Yi PB Front. Philos. China FD 2015-06-19 YR 2015 JF Frontiers of Philosophy in China JO Front. Philos. China VO 10 IS 2 SP 212 DO 10.3868/s030-004-015-0017-9 K1 human nature;physical nature;rational nature;Pre-Qin China;Laozi;Confucius LK {https://journal.hep.com.cn/fpc/EN/article/article_13158.shtml}