In carrying out this fundamental principle you need to seek for no other methods, but must only concentrate your thoughts on it. The book Leng Yen says: "By collecting the thoughts one can fly and will be born in heaven". Heaven is not the wide blue sky but the place where corporeality is begotten in the house of the Creative. If one keeps this up for a long time there develops quite naturally, in addition to the body, yet another spirit-body.
Translators of The Secret of the Golden Flower are Richard Wilhelm and Cary F. Baynes. If you missed any posts in this series, please utilize the Golden Flower label below.