The Holy Science is a book written by Swami Sri Yukteswar Giri in 1894 under the title Kaivalya Darsanam. Sri Yukteswar states that he wrote The Holy Science at the request of Mahavatar Babaji.[1] The book compares parallel passages from the Bible and Upanishads in order to show the unity of all religions.[2][3]
holy
was invoked but never defined (see the help page).