《黄帝内经·素问·四气调神大论》
只有圣人能适应自然变化，注重养生之道，所以身无大病，因不背离自然万物的发展规律，而生机不会竭绝。
唯圣人从之，故身无苛病，万物不失，生气不竭。
Only the saints can adapt to the changes of nature and pay attention to the way of health preservation, so they have no serious diseases, because they do not deviate from the laws of the development of all things in nature, and their vitality will not be exhausted.