Gaozi

Gaozi (Chinese: 告子; pinyin: Gàozĭ; Wade–Giles: Kao-tzu; literally "Master Gao"; ca. 420-350 BCE), or Gao Buhai (告不害), was a Chinese philosopher during the Warring States Period. Gaozi's teachings are no longer extant, but he was a contemporary of Mencius (ca. 372-289 BCE), and most of our knowledge about him comes from the Mencius book (6) titled "Gaozi".