Yang Zhu (simplified Chinese: 杨朱; traditional Chinese: 楊朱; pinyin: Yáng Zhū; Wade–Giles: Yang Chu; 440–360 BC), also known as Yang Zi or Yangzi (Master Yang), was a Chinese philosopher during the Warring States period. An early ethical egoist alternative to Mohist and Confucian thought, Yang Zhu's surviving ideas appear primarily in the Chinese texts Huainanzi, Lüshi Chunqiu, Mengzi, and possibly the Liezi and Zhuangzi.
The philosophies attributed to Yang Zhu, as presented in Liezi, clash with the primarily Daoist influence of the rest of the work. Of particular note is his recognition of self-preservation (weiwo 為我), which has led him to be credited with "the discovery of the body". In comparison with other Chinese philosophical giants, Yang Zhu has recently faded into relative obscurity, but his influence in his own time was so widespread that Mencius (孟子) described his philosophies along with the antithetical ideas of Mozi (墨子) as "floods and wild animals that ravage the land" (Liu: 1967: 358).
According to Mencius, “Yang’s principle is, ‘Each for himself’—which does not acknowledge the claims of the sovereign. Mo’s principle is, ‘To love all equally’—which does not acknowledge the peculiar affection due to a father. To acknowledge neither king nor father is to be in the state of the beast. If their principles are not stopped, and the principles of Confucius set forth, their perverse speaking will delude the people, and stop up the path of benevolence and righteousness” (Durant: 1963: 681).