Galen. The Hebrew translation was made by Abraham ben Hasdai at the request of the grammarian David Kimhi. Manhig ha-Rofe'im, or Musar ha-Rofe'im, a treatise, in fifty paragraphs, for physicians, translated into Hebrew (the Arabic original is not extant), and into German by David Kaufmann under the title Propädeutik für Aerzte (Berliner's "Magazin," xi. 97-112). Kitab fi al-Tiryaḳ, a work on antidotes. Some writers attribute to Isaac Israeli two other works which figure among Constantine's translations, namely, the Liber Pantegni and the Viaticum, of which there are three Hebrew translations. But the former belongs to Mohammed al-Razi and the latter to 'Ali ibn 'Abbas or, according to other authorities, to Israeli's pupil Abu Jaf'ar ibn al-Jazzar. Philosophical works Kitab al-Ḥudud wal-Rusum, translated into Hebrew by Nissim b. Solomon (fourteenth century) under the title Sefer ha-Gebulim weha-Reshumim, a philosophical work of which a Latin translation is quoted in the beginning of the Opera Omnia. This work and the Kitab al-Istiḳat were severely, criticized by Maimonides in a letter to Samuel ibn Tibbon (Iggerot ha-Rambam, p. 28, Leipsic, 1859), in which he declared that they had no value, inasmuch as Isaac Israeli ben Solomon was nothing more than a physician. Kitab Bustan al-Ḥikimah, on metaphysics. Kitab al-Ḥikmah, a treatise on philosophy. Kitab al-Madkhal fi al-Mantiḳ, on logic. The last three works are mentioned by Ibn Abi Uṣaibi'a, but no Hebrew translations of them are known. Sefer ha-Ruaḥ weha-Nefesh, a philosophical treatise, in a Hebrew translation, on the difference between the spirit and the soul, published by Steinschneider in Ha-Karmel (1871, pp. 400–405). The editor is of opinion that this little work is a fragment of a larger one. A philosophical commentary on Genesis, in two books, one of which deals with Genesis i. 20. Attributed works Eliakim Carmoly ("Ẓiyyon," i. 46) concludes that the Isaac who was so violently attacked by Abraham ibn Ezra in the introduction to his commentary on the Pentateuch, and whom he calls in other places "Isaac the Prattler", and "Ha-Yiẓḥaḳ," was none other than Isaac Israeli. But if Israeli was attacked by Ibn Ezra he was praised by other Biblical commentators, such as Jacob b. Ruben, a contemporary of Maimonides, and by Ḥasdai. Another work which has been ascribed to Israeli, and which more than any other has given rise to controversy among later scholars, is a commentary on the "Sefer Yeẓirah." Steinschneider (in his "Al-Farabi," p.