Wu wei (Chinese: 無爲; a variant and derivatives: traditional Chinese and Japanese: 無為; simplified Chinese: 无为; pinyin: wú wéi; Korean: 無爲(무위); Vietnamese: Vô vi; English, lit. non-doing) is an important concept in Taoism that literally means non-action or non-doing.
In the Tao te Ching, Lao Tzu explains that beings (or phenomena) that are wholly in harmony with the Tao behave in a completely natural, uncontrived way. The goal of spiritual practice for the human being is, according to Lao Tzu, the attainment of this purely natural way of behaving, as when the planets revolve around the sun. The planets effortlessly do this revolving without any sort of control, force, or attempt to revolve themselves, instead engaging in effortless and spontaneous movement.