《庄子·外篇·达生》
身体内部郁结着气，精魂就会离散而不返归于身，对于来自外界的骚扰也就缺乏足够的精神力量。郁结着的气上通而不能下达，就会使人易怒；下达而不能上通，就会使人健忘；不上通又不下达，郁结内心而不离散，那就会生病。 
夫忿滀之气，散而不反，则为不足；上而不下，则使人善怒；下而不上，则使人善忘；不上不下，中身当心，则为病。 
When the body contains blockages of internal Qi, the spirits become dispersed and fail to return to the body, thus lacking the energy to withstand external disturbances. When blockages of internal Qi rise but cannot descend, people become easily angered; when they descend but cannot rise, people become forgetful; when they neither rise nor descend, becoming blockages in the mind but not being dispersed, people fall ill.