It contains forty- eight koans, or spiritual riddles, that must be explored during the course of Zen training. Shibayama Zenkei (1894-1974), an influential Japanese Zen teacher and calligrapher who traveled and lectured throughout the United States in the 60s and 70s, offers his own commentary alongside the classic text. The Gateless Barrier remains an essential text for all serious students of Buddhism.

    It discusses the question of how man can transcend his finite state and participate in the life of the infinite while still remaining in the midst of the phenomenal order and concludes with a discussion of the particular practices and techniques that will aid the believer in the awakening and growth of his faith.

    Then Subhutti, upon hearing the Sutra spoken, and deeply understanding its purport, wept and said to the Buddha, "How rare, World Honored One, is this Sutra so profoundly spoken by the Buddha. From the time I obtained the Wisdom Eye until the present I have never before heard such a Sutra. World Honored One, if someone hears the Sutra with a pure heart of faith then he realizes the real mark. That person should be known to have accomplished the foremost and most rare merit and virtue."