To commemorate the 2015 centenary of the birth of Alan Watts (1915-1973), Peter J. Columbus and Donadrian L. Rice have assembled a much-needed collection of Watts's scholarly essays and lectures. Compiled from professional journals, monographs, scholarly books, conferences, and symposia proceedings, the volume sheds valuable light on the developmental arc of Watts's thinking about language and mysticism, Buddhism and Zen, Christianity, comparative religion, psychedelics, and psychology and psychotherapy. This definitive collection challenges Watts's reputation as a "popularizer" or "philosophical entertainer," revealing his concerns to be much more expansive and transdisciplinary than is suggested by the parochial "Zen Buddhist" label commonly affixed to his writings. The editors' authoritative introduction elucidates contemporary perspectives on Watts's life and work, and supports a bold rethinking of his contributions to psychology, philosophy, and religion.