The first of these is R. Chasdai Ibn Crescas, who composed his famous treatise, _The Light of God_, about 1405. Chasdai’s book is well known for its attacks on Aristotle, and also for its influence on Spinoza. But Chasdai deals also with Maimonides’ Thirteen Articles, to which he was very strongly opposed. Already in his preface he attacks Maimonides for speaking, in his _Book of the Commandments_, of the belief in the existence of God as an “affirmative precept.” Chasdai thinks it absurd; for every commandment must be dictated by some authority, but on whose authority can we dictate the acceptance of this authority? His general objection to the Thirteen Articles is that Maimonides confounded dogmas or _fundamental beliefs_ of Judaism, without which Judaism is inconceivable, with beliefs or _doctrines_ which Judaism inculcates, but the denial of which, though involving a strong heresy, does not make Judaism impossible. He maintains that if Maimonides meant only to count fundamental teachings, there are not more than seven; but that if he intended also to include doctrines, he ought to have enumerated sixteen. As beliefs of the first class—namely, fundamental beliefs—he considers the following articles: 1. God’s knowledge of our actions; 2. Providence; 3. God’s omnipotence—even to act against the laws of nature; 4. Prophecy; 5. Free will; 6. The aim of the Torah is to make man long after the closest communion with God. The belief in the existence of God, Chasdai thinks, is an axiom with which every religion must begin, and he is therefore uncertain whether to include it as a dogma or not. As to the doctrines which every Jew is bound to believe, but without which Judaism is not impossible, Chasdai divides them into two sections: (_a_) 1. _Creatio ex nihilo_; 2. Immortality of the soul; 3. Reward and Punishment; 4. Resurrection of the dead; 5. Immutability of the Torah; 6. Superiority of the prophecy of Moses; 7. That the High Priest received from God the instructions sought for, when he put his questions through the medium of the Urim and Thummim; 8. The coming of the Messiah. (_b_) Doctrines which are expressed by certain religious ceremonies, and on belief in which these ceremonies are conditioned: 1. The belief in the efficacy of prayer—as well as in the power of the benediction of the priests to convey to us the blessing of God; 2. God is merciful to the penitent; 3. Certain days in the year—for instance, the Day of Atonement—are especially qualified to bring us near to God, if we keep them in the way we are commanded. That Chasdai is a little arbitrary in the choice of his “doctrines,” I need hardly say. Indeed, Chasdai’s importance for the dogma‐question consists more in his critical suggestions than in his positive results. He was, as we have seen, the first to make the distinction between fundamental teachings which form the basis of Judaism, and those other simple Jewish doctrines without which Judaism is not impossible.