Ziran (Chinese: 自然, Pinyin: zìrán) is a key concept in Daoism that literally means "of its own; by itself" and thus "naturally; natural; spontaneously; freely; in the course of events; of course; doubtlessly". This Chinese word is a two-character compound of zi (自) "nose; self; oneself; from; since" and ran (然) "right; correct; so; yes", which is used as a -ran suffix marking adjectives or adverbs (roughly corresponding to English -ly). In Chinese culture, the nose (or zi) is a common metaphor for a person's point of view. The phrase ziran's use in Daoism is rooted in the Daodejing (chapters 17, 23, 25, 51, 64), written around 400 BCE. Ziran is a central concept of Daoism, closely tied to the practice of wuwei, detached or effortless action. Ziran refers to a state of "as-it-isness," the most important quality for anyone following Daoist beliefs. To become nearer to a state of ziran, one must become separate from unnatural influences and return to an entirely natural, spontaneous state. Ziran is related to developing an "altered sense of human nature and of nature per se". When it comes to sensibility of Taoism, the moral import can be most found in ziran. Ziran has been interpreted and reinterpreted in a great number of ways over time. Most commonly, it has been seen as the greatest spiritual concept that was followed by lesser concepts of the Dao, Heaven, Earth, and Man in turn, based on the traditional translation and interpretation of Chapter 25 of the Daodejing. Qingjie James Wang's more modern translation eliminates the logical flaw that arises when one considers that to model oneself after another entity may be to become less natural, to lose the 'as-it-isness' that ziran refers to. Wang reinterprets the words of Chapter 25 to be instructions to follow the model set by Earth's being Earth, by Heaven's being Heaven, and by the Dao being the Dao; each behaving perfectly in accordance with ziran. This interpretation reaffirms that the base nature of the Dao is one of complete naturalness.