The Blue Cliff Record is a classic text of Zen Buddhism, designed to assist in the activation of dormant human potential. The core of this extraordinary work is a collection of one hundred traditional citations and stories, selected for their ability to bring about insight and enlightenment. These vignettes are known as gongan in Chinese and koan in Japanese. Secrets of the Blue Cliff Record is a fresh translation featuring newly translated commentary from two of the greatest Zen masters of early modern Japan, Hakuin Ekaku (1685–1768) of the Rinzai sect of Zen and Tenkei Denson (1648–1735) of the Soto sect of Zen. This translation and commentary on The Blue Cliff Record sheds new light on the meaning of this central Zen text.