“The valley spirit doesn’t die;
this is called the mysterious female.
The opening of the mysterious female
is called the root of heaven and earth.”

– Lao-Tzu

The Tao Te Ching
Understanding Reality:
A Taoist Alchemical Classic by Chang Po-tuan

“In order to see Tai Ji’s mystery, practice transforming the qi into spirit. In the state where there is no separation between the self and others, the mystery is united with nature. When the qi is full and the spirit complete, one approaches the Dao. To know harmony is called permanence. To know permanence is called enlightenment. The practitioner should seek this diligently. Success comes to those who are willing to take great pains in study and practice.”

– Grandmaster Wu Gin Gu

A Study of Taijiquan by Sun Lutang