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Swami Sri Yukteswar Giri was the guru of Paramahansa Yogananda, a renowned Indian yogi and philosopher. Yogananda, the author of the spiritual classic "Autobiography of a Yogi," received his spiritual training and guidance from Yukteswar, who initiated him into the ancient science of Kriya Yoga. Yukteswar played a pivotal role in shaping Yogananda's spiritual path and inspiring his mission to spread the teachings of yoga to the West.