Gregory Ripley (Li Guan, 理觀) is a Taoist priest in the 22nd generation of the Quanzhen Longmen tradition as well as a Nature and Forest Therapy Guide. He holds a bachelor’s degree in Asian studies from the University of Tennessee and a master’s degree in acupuncture from Northwestern Health Sciences University. The author of Tao of Sustainability and Voice of the Elders, he lives in Golden Valley, Minnesota.