The Eternal Religion, the religion of the rishis, has been in existence from time immemorial and will exist eternally. There exists in this Sanatana Dharma all forms of worship--worship of God with form and worship of the impersonal Deity as well. It contains all paths--the path of knowledge, the path of devotion and so on. Other forms of religion, the modern cults, will remain for a few days and then disappear.
-- Sri Ramakrishna in a conversation with a devotee on March 9, 1884