Moses Maimonides (1138-1204), physician, scientist, astronomer, philosopher, and theologian, emerged as a halakhist through his classic work, Commentary on the Mishnah, in which he sets out to explain to the layman the meaning and the purpose of the Mishnah, while bypassing the often complicated and concentrated discussions of the Gemara. It was Maimonides' wish to popularize the Mishnah and to make it easily accessible to the general reader. He did so by extracting the underlying principles involved in lengthy, often abstract, talmudic discussions and stating the halakhic decisions derived therein, interspersing them with ethical insights and philosophical teachings.