Maimonides therefore undertook to compile a complete code, which would contain, in the language and style of the Mishnah, and without discussion, the whole of the Written and the Oral Law, all the precepts recorded in the Talmud, Sifra, Sifre and Tosefta, and the decisions of the Geonim.

Maimonides is of opinion that the arguments based on the properties of things in Nature are inadmissible, because the laws by which the Universe is regulated need not have been in force before the Universe was in existence.

You must know that it is very injurious to begin with this branch of philosophy, viz., Metaphysics; or to explain [at first] the sense of the similes occurring in prophecies, and interpret the metaphors which are employed in historical accounts and which abound in the writings of the Prophets.