Aaron Ben-Elia, a Karaite of Nicomedia, lived in the 14th century. He wrote a work in imitation of the Moreh of Maimonides, entitled The Tree of Life, which is a presentation, on a philosophical basis, of the dogmas of Mosaism; and contains, also, detailed accounts respecting the religious and philosophical schools among the Arabs. See Ueberweg, Hist. of Philos. 1, 428.