Taoism (also called Daoism) is a philosophical, ethical or religious tradition of Chinese origin that emphasizes living in harmony with the Tao (also romanized as Dao). The term Tao means "way", "path", or "principle", and can also be found in Chinese philosophies and religions other than Taoism. In Taoism, however, Tao denotes something that is both the source of, and the force behind, everything that exists. Taoism is practiced as a religion in various Asian communities. Its theology is not theist (even though some communities do worship Laozi as the attributed founder of the religious doctrine), and has more affinities with pantheistic traditions given its philosophical emphasis on the formlessness of the Tao.
Taoism drew its cosmological notions from the tenets of the School of Yin Yang, and is heavily influenced and informed by the acknowledged oldest text of ancient Chinese classics, the I Ching, which prescribes a system of philosophical thought on the ethics of human behaviours based on articulating cycles of change in the natural and social worlds by means of hexagrams, and includes instructions for divination practice still adhered to by modern-day religious Taoists. Daoism, as Taoism is sometimes referred, diverged sharply from Confucian thoughts by scorning rigid rituals and social classes. The Tao Te Ching, a compact and ambiguous book containing teachings attributed to Laozi (Chinese: 老子; pinyin: Lǎozǐ; Wade–Giles: Lao Tzu), is widely considered the keystone work of this philosophy. Together with the writings of Zhuangzi, which interprets and adds to the teaching of Laozi, these classic texts provide the philosophical foundation of Taoism deriving from the 8 trigrams (bagua) of Fu Xi in the 2700s BC in China, the various combinations of which creates the 64 hexagrams as documented in the I Ching.
In English, the words Daoism and Taoism (/ˈtaʊ.ɪzəm/ or /ˈdaʊ.ɪzəm/) are the subject of an ongoing controversy over the preferred romanization for naming this native Chinese philosophy and Chinese religion. The root Chinese word 道 "way, path" is romanized tao in the older Wade–Giles system and dào in the modern Pinyin system. The sometimes heated arguments over Taoism vs. Daoism involve sinology, phonemes, loanwords, and politics.
Phonetic transcription (representing each distinct speech sound with a separate symbol) is shown with the International Phonetic Alphabet enclosed in square brackets [ ], and phonemic transcription (representing a small set of speech sounds that a particular language distinguishes) is enclosed within virgules or slashes / /. In articulatory phonetics, "aspiration" is an articulation that involves an audible release of breath. For example, the /t/ in tore [tʰɔər] is "aspirated", with a noticeable puff of breath, but the /t/ in store [stɔər] is "unaspirated". The diacritic for aspiration is a superscript "h", [ʰ] (e.g., tʰ pʰ). While the original IPA did not explicitly mark unaspirated consonants, the revised Extensions to the IPA marks them with a superscript equals sign "=", [⁼] (e.g., t⁼, p⁼). "Voice" or "voicing" distinguishes whether a particular sound is either "voiced" (when the vocal cords vibrate) or "unvoiced" (when they do not). Examples include voiceless [t, s] and voiced [d, z].