Tao Te Ching

“Only after one hundred days of consistent work, only then is the light genuine; only then can one begin to work with the spirit-fire.”

— Lü Dongbin 呂洞賓 1 via Richard Wilhelm
(Lü Tung-Pin)

from Secret of the Golden Flower 太乙金華宗旨; Tàiyǐ Jīnhuá Zōngzhǐ