It is a well-known fact that the philosophers, when they discuss in their works the order of the Universe, assume that the existing order of things in this sublunary world of transient beings depends on forces which emanate from the spheres. We have mentioned this several times. In like manner our Sages say, “There is no single herb below without its corresponding star above, that beats upon it and commands it to grow.” Comp. “Knowest thou the ordinances of heaven? Canst thou set the dominion thereof in the earth?” (Job xxxviii. 33). The term mazzal, literally meaning a constellation in the Zodiac, is also used of every star, as may be inferred from the following passage in the beginning of Bereshit Rabba (chap. x.): “While one star (mazzal) completes its circuit in thirty days, another completes it in thirty years.” They have thus clearly expressed it, that even each individual being in this world has its corresponding star. Although the influences of the spheres extend over all beings, there is besides the influence of a particular star directed to each particular species; a fact noticed also in reference to the several forces in one organic body; for the whole Universe is like one organic body, as we have stated above. Thus the philosophers speak of the peculiar influence of the moon on the particular element water. That this is the case is proved by the increase and decrease of the water in the seas and rivers according to the increase and decrease of the moon; also by the rising and the falling of the seas according to the advance or return of the moon, i.e., her ascending and her descending in the several quarters of her course. This is dear to every one who has directed his attention to these phenomena. The influence of the sun’s rays upon fire may easily be noticed in the increase of heat or cold on earth, according as the sun approaches the earth or recedes or is concealed from it. All this is so clear that I need not explain it further. Now it occurred to my mind that the four spheres which contain stars exercise influence upon all beings on earth that come into existence, and, in fact, are the cause of their existence; but each of the four spheres is the exclusive source of the properties of one only of the four elements, and becomes by its own motion the cause of the motion and changes of that element. Thus water is set in motion by the moon-sphere, fire by the sun-sphere, air by the other planets, which move in many and different courses with retrogressions, progressions, and stations, and therefore produce the various forms of the air with its frequent changes, contractions, and expansions; the sphere of the other stars, namely, the fixed stars, sets earth in motion; and it may be that on this account, viz., on account of the slow motion of the fixed stars, earth is but slowly set in motion to change and to combine with other elements. The particular influence which the fixed stars exercise upon earth is implied in the