Book excerpt: A captivating time-travel adventure, based on the revolutionary "cycles of time" or "yuga" theory propounded by Paramhansa Yogananda (author of the bestselling classic Autobiography of a Yogi) and Yogananda's guru, Swami Sri Yukteswar. Through Many Lives provides insights into how time travel might actually take place in the future, by experiencing one's own past and future lives. A mood of gentle excitement permeates the book, while profound spiritual teachings are presented through the medium of a compelling story. Through Many Lives is the first novel in the "Treta Yuga Trilogy."