Taoism (or Daoism) includes propriety and ethics emphasizing the Three Jewels of the Tao: compassion, moderation, and humility, while Taoist thought generally focuses on nature, the relationship between humanity and the cosmos, health and longevity, and (action through inaction), which is thought to produce harmony with the Universe. Taoism refers to a philosophy and/or religious tradition that emphasizes living in harmony with the Tao, the source and essence of everything that exists. The term Tao originally means "way", "path" or "principle", and can be found in many Chinese philosophies and religions. In Taoism, however, it denotes an obscure metaphysical force which is ultimately ineffable: "The Tao that can be named is not the absolute Tao." Laozi was a philosopher of ancient China, best known as the author of the Tao Te Ching (often simply referred to as Laozi). His association with the Tao Te Ching has led him to be traditionally considered the founder of philosophical Taoism (pronounced as "Daoism"). According to Chinese traditions, Laozi lived in the 6th century BCE. Historians variously contend that Laozi is a synthesis of multiple historical figures, that he is a mythical figure, or that he actually lived in the 5th–4th century BCE, concurrent with the Hundred Schools of Thought and Warring States Period. “Watch your thoughts, for they become words. Watch your words, for they become actions. Watch your actions, for they become habits. Watch your habits, for they become character. Watch your character, for it becomes your destiny.”