《鬼谷子·本经阴符七术·盛神法五龙》
道术是根据道而采用的策略、方法，是心气按规律活动的结果。精神是道术的使者。
术者，心气之道所由舍者，神乃为之使。
Taoism is a strategy and method based on the Tao. It is the result of the heart and qi acting according to the law. The spirit is the messenger of Taoism.