《黄帝内经·素问·气交变大论》
这些正是所谓精深高明的理论，圣人的伟大事业，研究发扬它的道理，达到了无穷无尽的境界。
所谓精光之论，大圣之业，宣明大道，通于无穷，究于无极也。
These theories are what is called the incredibly brilliant; the saints are the great deeds, and the research to develop them has reached the endless realm.