Bahaism is not so much an organization as a spiritual attitude, not so much a new religion...

Apparently, it is not so much an organization as a spiritual attitude, not so much a new religion as religion renewed. Its followers are found in all sorts of ecclesiastical organizations. To be a Baha'i a man need not sever his previous religious affiliations; he may remain a Buddhist, or Hindu Brahmin, a Parsee, a Mohammedan, or a Christian. He becomes one of the Baha'i Movement when he catches the Baha'i spirit.

(Page 339, BAHAISM—A STUDY OF A CONTEMPORARY MOVEMENT, ALBERT R. VAIL, 1914)