David Loy

David Loy began Zen practice in 1971 under Yamada Koun Roshi and Robert Aitken, later completing formal koan study in 1988 and receiving the dharma name Tetsu-un as a dharma successor of Yamada Koun Roshi in the Sanbo Zen tradition. A former professor of Buddhist and comparative philosophy, he is the author of numerous books, including Nonduality: A Study in Comparative Philosophy and Ecodharma: Buddhist Teachings for the Ecological Crisis (2019), and writes regularly for Tricycle, Lion's Roar and Tikkun.

He currently leads a weekly Wednesday morning Zoom meditation and dharma talk from Colorado, lectures internationally, and leads ecodharma retreats and workshops; a busy autumn 2026 schedule takes him through Finland, the Netherlands, Belgium and Italy, alongside his ongoing base at the Rocky Mountain Ecodharma Retreat Center near Boulder, which he co-founded.