The Holy Science is a book of theology written by Swami Sri Yukteswar Giri in 1894. The text provides a close comparison of parts of the Christian Bible to the Hindu Upanishads, meant "to show as clearly as possible that there is an essential unity in all religions...and that there is but one Goal admitted by all scriptures."
Swami Sri Yukteswar Giri was born Priya Nath Karar in 1855 to a wealthy family. As a young man, he was a brilliant student of math and science, astrology and astronomy. He joined a Christian missionary school where he studied the Bible and later spent two years in medical school.
After completing his formal education, Priya Nath married and had a daughter. But he continued his intellectual and spiritual pursuits, depending on the income from his property to support himself and his family.
After the death of his wife, he entered the monastic Swami order and became Sri Yuktesvar Giri, before beco