The Venerable Cheng-yen is an unassuming Taiwanese Buddhist nun who leads a worldwide social welfare movement with five million devotees in over thirty countries--with its largest branch in the United States. Tzu-Chi (Compassion Relief) began as a tiny, grassroots women's charitable group; today in Taiwan it runs three state-of-the-art hospitals, a television channel, and a university. Cheng-yen, who has been nominated for the Nobel Peace Prize, is a leader in Buddhist peace activism and has garnered recognition by Business Week as an entrepreneurial star.

Based on extensive...