Laozi (also Lao-Tzu or Lao-Tze) was a philosopher and poet of ancient China. He is known as the reputed author of the Tao Te Ching and the founder of philosophical Taoism, and as a deity in religious Taoism and traditional Chinese religions. Although a legendary figure, he is usually dated to around the 6th century BCE and reckoned a contemporary of Confucius, but some historians contend that he actually lived during the Warring States period of the 5th or 4th century BCE.