Guide for the Perplexed, by Moses Maimonides, Friedländer tr. [1904], at sacred-texts.com
THE Mutakallemim, as I have already told you, apply the term non-existence only to absolute non-existence, and not to the absence of properties. A property and the absence of that property are considered by them as two opposites, they treat, e.g., blindness and sight, death and life, in the same way as heat and cold. Therefore they say, without any qualification, nonexistence does not require any agent, an agent is required when something is produced. From a certain point of view this is correct. Although they hold that non-existence does not require an agent, they say in accordance with their principle that God causes blindness and deafness, and gives rest to anything that moves, for they consider these negative conditions as positive properties. We must now state our opinion in accordance with the results of philosophical research. You know that he who removes the obstacle of motion is to some extent the cause of the motion, e.g., if one removes the pillar which supports the beam he causes the beam to move, as has been stated by Aristotle in his Physics (VIII., chap. iv.); in this sense we say of him who removed a certain property that he produced the absence of that property, although absence of a property is nothing positive. Just as we say of him who puts out the light at night that he has produced darkness, so we say of him who destroyed the sight of any being that he produced blindness, although darkness and blindness are negative properties, and require no agent.
[paragraph continues] In accordance with this view we explain the following passage of Isaiah: "I form the light and create (bore) darkness: I make peace, and create (bore) evil" (Isa. xlv. 7), for darkness and evil are non-existing things. Consider that the prophet does not say, I make (‘oseh) darkness, I make (‘oseh) evil, because darkness and evil are not things in positive existence to which the verb "to make" would apply; the verb bara "he created" is used, because in Hebrew this verb is applied to non-existing things e.g., "In the beginning God created" (bara), etc.; here the creation took place from nothing. Only in this sense can non-existence be said to be produced by a certain action of an agent. In the same way we must explain the following passage: "Who hath made man's mouth? or who maketh the dumb, or the deaf, or the seeing," etc. (Exod. iv. 11). The passage can also be explained as follows: Who has made man able to speak? or can create him without the capacity of speaking, i.e., create a substance that is incapable of acquiring this property? for he who produces a substance that cannot acquire a certain property may be called the producer of that privation. Thus we say, if any one abstains from delivering a fellow-man from death, although he is able to do so, that he killed him. It is now clear that according to an these different views the action of an agent cannot be directly connected with a thing that does not exist: only indirectly is non-existence described as the result of the action of an agent, whilst in a direct manner an action can only influence a thing really in existence; accordingly, whoever the agent may be, he can only act upon an existing thing.
After this explanation you must recall to memory that, as has been proved, the [so-called] evils are evils only in relation to a certain thing, and that which is evil in reference to a certain existing thing, either includes the nonexistence of that thing or the non-existence of some of its good conditions. The proposition has therefore been laid down in the most general terms, "All evils are negations." Thus for man death is evil: death is his non-existence. Illness, poverty, and ignorance are evils for man: all these are privations of properties. If you examine all single cases to which this general proposition applies, you will find that there is not one case in which the proposition is wrong except in the opinion of those who do not make any distinction between negative and positive properties, or between two opposites, or do not know the nature of things,--who, e.g., do not know that health in general denotes a certain equilibrium, and is a relative term. The absence of that relation is illness in general, and death is the absence of life in the case of any animal. The destruction of other things; is likewise nothing but the absence of their form.
After these propositions, it must be admitted as a fact that it cannot be said of God that He directly creates evil, or He has the direct intention to produce evil: this is impossible. His works are all perfectly good. He only produces existence, and all existence is good: whilst evils are of a negative character, and cannot be acted upon. Evil can only he attributed to Him in the way we have mentioned. He creates evil only in so far as He produces the corporeal element such as it actually is: it is always connected with negatives, and is on that account the source of all destruction and all evil. Those beings that do not possess this corporeal element are not subject to destruction or evil: consequently the true work of God is all good, since it
is existence. The book which enlightened the darkness of the world says therefore, "And God saw everything that He had made, and, behold, it was very good" (Gen. i. 31). Even the existence of this corporeal element, low as it in reality is, because it is the source of death and all evils, is likewise good for the permanence of the Universe and the continuation of the order of things, so that one thing departs and the other succeeds. Rabbi Meir therefore explains the words "and behold it was very good" (tob me’od); that even death was good in accordance with what we have observed in this chapter. Remember what I said in this chapter, consider it, and you will understand all that the prophets and our Sages remarked about the perfect goodness of all the direct works of God. In Bereshit Rabba (chap. i.) the same idea is expressed thus: "No evil comes down from above."