京房易学的阴阳五行说

The Theory of Yin-Yang and Five Elements in Jing Fang's Studies of The Book of Changes

京房在两汉易学史占有着重要地位。从某种程度上说,汉代象数易学是由京房奠定的。京房之所以能够对两汉易学产生如此重要的作用,就在于其把阴阳五行思想引入到《周易》中,使得《周易》变为以阴阳五行思想为基础的象数易学。京房的八宫说、飞伏说、纳甲说、纳支说等思想无不与阴阳五行思想有着密切关系。因此,探讨京房易学的阴阳五行思想对于认识京房易学乃至两汉经学都有着极为重要的意义。京房之所以在阴阳五行思想基础上建立一套八宫卦为基础的象数学说,并不主要是为了易学建构,而是为了政治上的运用,这与后世以占测个人吉凶为目的的术数之学有着本质不同。这也是京房易学在当时被立为官学的原因所在。

Jing Fang played an important role in the academic history of The Book of Changes in the Han dynasty.To some extent,he established the studies of image-numerology at that time.Such importance derived from his introduction of the thought of Yin-Yang and Five Elements into the studies of The Book of Changes,thus turned the latter into the studies of image-numerology based on Yin-Yang and the Five Elements.His thoughts on The Book of Changes are all closely related to Yin-Yang and the Five Elements.He constructed a set of eight-palace hexagrams based on the thought of Yin-Yang and Five Elements mainly for political application but not theoretical construction.This approach was fundamentally different from the technology of divination for predicting personal good or ill luck in later generations.And this is why Jing Fang's study of The Book of Changes was established to be the official learning then.