道德经 (Tao Te Ching), also known as Lao Tzu or Laozi, is a Chinese classic text traditionally credited to the 6th-century BC sage Laozi. The text's authorship, date of composition and date of compilation are debated. The oldest excavated portion dates back to the late 4th century BC, but modern scholarship dates other parts of the text as having been written—or at least compiled—later than the earliest portions of the Zhuangzi. The Tao Te Ching, along with the Zhuangzi, is a fundamental text for both philosophical and religious Taoism.
