Lüshi Chunqiu
Yang Zhu (; ; 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".