Why Religion Matters: The Fate of the Human Spirit in an Age of Disbelief. By Huston Smith. HarperSanFrancisco, 277 pp., $25.00.

Huston Smith's interests have always been eclectic. The child of Protestant missionaries to China, he grew up in Asia. During the 1960s he associated with Aldous Huxley and Timothy Leary, and was known for his defense of entheogenic (or hallucinogenic) plants and chemicals for religious purposes. (He recently published a collection of his writings on the subject, titled Cleansing the Doors of Perception: The Religious Significance of Entheogenic Plants and Chemicals.) Over the past 50 years Smith has held professorates at a host of distinguished institutions, including MIT, Syracuse and the University of California, Berkeley. His appearance on Bill Moyers's recent PBS series on religion has made his face familiar to many.

Smith has consistently made the case for what he calls "the big picture." The traditional worldview of metaphysics and religion that flourished prior to the modern era understood ultimate reality to be spiritual, and the material universe to be derived from something greater than itself. In his latest book Smith argues that science, along with its attendant philosophies of naturalism and materialism, has systematically eclipsed this big picture. Modern science has constructed a narrow tunnel into which it leads all who would follow it. "We have dropped Transcendence not because we have discovered something that proves it nonexistent. We have merely lowered our gaze," he writes. Smith's book attempts to lead us out of the tunnel and to lift our gaze again to a universe filled with beauty and purpose.