If I had omitted setting down something of that which has appeared to me as clear, so that the knowledge would perish when I perish, as is inevitable, I should have considered that conduct as extremely cowardly with regard to you and everyone who is perplexed.

[T]he principal part in the human body, namely, the heart, is in constant motion, and is the source of every motion noticed in the body; it rules over the other members, and communicates to them through its own pulsations the force required for their functions. The outermost sphere by its motion rules in a similar way over all other parts of the universe, and supplies all things with their special properties. Every motion in the universe has thus its origin in the motion of that sphere; and the soul of every animated being derives its origin from the soul of that same sphere.

Through the constant revolution of the fifth element, with all contained therein, the four elements are forced to move and to change their respective positions, so that fire and air are driven into the water, and again these three elements enter the depth of the earth. Thus are the elements mixed together; and when they return to their respective places, parts of the earth, in quitting their places, move together with the water, the air and the fire. In this whole process the elements act and react upon each other. The elements intermixed, are then combined, and form at first various kinds of vapours; afterwards the several kinds of minerals, every species of plants, and many species of living beings, according to the relative proportion of the constituent parts. All transient beings have their origin in the elements, into which again they resolve when their existence comes to an end. The elements themselves are subject to being transformed from one into another; for although one substance is common to all, substance without form is in reality impossible, just as the physical form of these transient beings cannot exist without substance.

The likeness of man above the throne is divided, the upper part being the colour of chashmal, the lower part like the appearance of fire. As regards the word chashmal, it has been explained to be the compound of two words chas and mal, including two different notions, viz., chash signifying "swiftness," and mal denoting "pause." The two different notions are here joined in one word in order to indicate figuratively the two different parts,—the upper part and the lower. We have already given a second explanation, namely, that chashmal includes the two notions of speach and silence; in accordance with the saying of our Sages, "At times they are silent,at times they speak."

God cannot be compared to anything. Note this.

Those who desire to be men in truth, and not brutes, having only the appearance and shape of men, must constantly endeavor to reduce the wants of the body, such as eating, love, drinking, anger, and all manners originating in lust and passion; they must feel ashamed of them and set limits to them for themselves.

Some consider... all wants of the body as shame, disgrace, and defect to which they are compelled to attend; this is chiefly the case with the sense of touch, which is a disgrace to us according to Aristotle, and which is the cause of our desire for eating, drinking, and sensuality. Intelligent persons must, as much as possible, reduce these wants, guard against them, abstain from speaking of them, discussing them, and attending to them in company of others. Man must have control over all these desires, reduce them as much as possible, and only retain of them as much as is indispensable. His aim must be the aim of man as man, viz., the formation of ideas, and nothing else. The best and sublimest among them is the idea which man forms of God, angels, and the rest of the creation according to his capacity. Such men are always with God, and of them it is said, "Ye are princes, and all of you are children of the Most High." (Ps. lxxxii. 6) This is man's task and purpose.

It was necessary that the very noble form of man, which is the image and likeness of God... should be joined to the substance of dust and darkness, the source of all defect and loss. For these reasons the Creator gave to the form of man power, rule, and dominion over the substance;—the form can subdue the substance, refuse the fulfillment of its desires, and reduce them, as far as possible, to a just and proper measure.

The knowledge of God, the formation of ideas, the mastery of desire and passion, the distinction between that which is to be chosen and that which is to be rejected, all these man owes to his form...

Man's shortcomings and sins are all due to the substance of the body and not to its form; while all his merits are exclusively due to his form.

Whatever form it has, it [matter] will be disposed to receive another form; it never leaves off moving and casting off the form which it has in order to receive another. ...It is therefore clear that all corruption, destruction, or defect comes from matter.

No form remains permanently in a substance; a constant change takes place, one form is taken off and another is put on.

Transient bodies are only subject to destruction through their substance and not through their form, nor can the essence of their form be destroyed; in this respect they are permanent.

Know that this Universe, in its entirety, is nothing else but one individual being; that is to say, the outermost heavenly sphere, together with all included therein, is as regards individuality beyond all question a single being like Said and Omar. The variety of its substances—I mean the substances of that sphere and all its component parts—is like the variety of the substances of a human being: just as, e.g., Said is one individual, consisting of various solid substances, such as flesh, bones, sinews of various humours, and of various spiritual elements; in like manner this sphere in its totality is composed of the celestial orbs, the four elements and their combinations; there is no vacuum whatever therein, but the whole space is filled up with matter. Its centre is occupied by the earth, earth is surrounded by water, air encompasses the water, fire envelopes the air, and this again is enveloped by the fifth substance (quintessence). These substances form numerous spheres, one being enclosed within another so that no intermediate empty space, no vacuum, is left. One sphere surrounds and closely joins the other. All the spheres revolve with constant uniformity, without acceleration or retardation; that is to say, each sphere retains its individual nature as regards its velocity and the peculiarity of its motion; it does not move at one time quicker, at another slower. Compared with each other, however, some of the spheres move with less, others with greater velocity. The outermost, all-encompassing sphere, revolves with the greatest speed; it completes its revolution in one day, and causes every thing to participate in its motion, just as every particle of a thing moves when the entire body is in motion; for all existing beings stand in the same relation to that sphere as a part of a thing stands to the whole. These spheres have not a common centre; the centres of some of them are identical with the centre of the Universe, while those of the rest are different from it. Some of the spheres have a motion independent of that of the whole Universe, constantly revolving from East to West, while other spheres move from West to East. The stars contained in those spheres are part of their respective orbits; they are fixed in them, and have no motion of their own, but participating in the motion of the sphere of which they are a part, they themselves appear to move. The entire substance of this revolving fifth element is unlike the substance of those bodies which consist of the other four elements, and are enclosed by the fifth element.