More than 70 years ago, Denis de Rougemont, the late Swiss scholar, wrote a fascinating book called Love in the Western World. In it he theorizes that Tantra, which ignited in India some time before 800 C.E. from much older roots, traveled west via the Muslim world under the umbrella of divine passion, or fana (the passing away of the self). Fana was the theme of mystical Arab love poetry and song.
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