Manichaeism (in Modern Persian آیین مانی Āyin e Māni; Chinese: 摩尼教 ||pinyin]]: Móní Jiào) was one of the major Iranian Gnostic religions, originating in Sassanid Persia. Although most of the original writings of the founding prophet Mani (in Persian: مانی, Syriac: ܡܐܢܝ, Latin: Manes) (c. 216–276 AD) have been lost, numerous translations and fragmentary texts have survived. Manichaeism is distinguished by its elaborate cosmology describing the struggle between a good, spiritual world of light, and an evil, material world of darkness. Through an ongoing process which takes place in human history, light is gradually removed from the world of matter and returned to the world of light from which it came.