Sri Yukteswar Giri (1855–1936) stands in the Kriya Yoga tradition as a monk, yogi, and spiritual master whose life was dedicated to uniting rigorous discipline with deep inner realization. Born Priya Nath Karar in Serampore, Bengal, he later entered the Swami order, specifically the Giri branch, and became a disciple of Lahiri Mahasaya. Within this lineage he is best known as the guru of Paramahansa Yogananda, whom he carefully prepared for the task of carrying Kriya Yoga and Vedantic teachings to the West. His ashrams in Serampore and Puri served as quiet centers of training, where a relatively small circle of disciples received close guidance.

His spiritual influence is perhaps most widely felt through his book *The Holy Science* (Kaivalya Darshanam), a concise yet profound work that seeks to reveal the underlying unity between Hindu and Christian scriptures. In this text he presents a harmonizing vision that brings together Eastern and Western thought, emphasizing the scientific and rational dimensions of yoga and meditation. Rather than encouraging blind belief, his teaching style stressed discrimination, clear understanding, and direct inner experience of the Divine. Within his lineage he was honored with the title “Jnanavatar,” an incarnation of wisdom, reflecting the esteem in which his clarity of insight and intellectual rigor were held.

Accounts of his life portray a master who combined strict discipline with deep compassion, one who demanded honesty, steadiness, and spiritual maturity from those who came to him. He is remembered for demonstrating that ancient yogic wisdom need not stand in opposition to reason, but can instead illuminate it, offering a bridge between scriptural revelation and thoughtful inquiry. Through his training of Paramahansa Yogananda and his own writings, Sri Yukteswar Giri helped shape a form of spiritual understanding that speaks both to the heart’s longing for God and to the mind’s search for coherence and truth.