This article offers an interpretation of the concept of 'zheng 正' (correct, proper, straight) as it appears in Daodejing and Zhuangzi. My aim is to reveal and develop the contributions that the Daoist classics make to the traditional meaning of this key cosmological, epistemological, and ethical concept. While Laozi in some passages throws the meaning and existence of zheng into question, in other passages it appears to have an exalted role in the sagely life. Similarly, Zhuangzi rejects zheng where it carries connotations of artificial rigidity, but embraces the zheng that aligns with nature's dynamism. Focus on this concept gives us an entry into broader themes in Daoist literature, and reveals zheng as an ideal of nature, knowledge, and normativity.