Motion, rest, spatial occupancy, inseparability, endless succession, immaterial entities, persistent accidents, circularity and the notion of place Read the bilingual lesson for Origination of Accidents and Substances: Premises, Objections and Replies and test your understanding with a focused quiz.
Lesson
1. The logical structure of the origination argument
أما الأعيان فإنها لا تخلو عن الحوادث، وكل ما لا يخلو عن الحوادث فهو حادث
Substances cannot be free of originated states; and whatever cannot be free of originated states is itself originated.
Aʿyān refers here to bodies and substances; ḥawādith are their newly occurring states. The first premise says no body is ever devoid of these states. The second says what is inseparable from originated states cannot itself be without beginning.
Alternations between motion and rest illustrate the first premise. Yet observing some changing bodies does not by itself prove the second premise, nor does it establish an unrestricted claim about every entity. Each logical transition needs its own argument.
2. Kawn fī al-ḥayyiz: occupancy of a place
Kawn fī al-ḥayyiz means a body's or substance's occupancy of a spatial location. The argument assumes that a body is in some locus, then compares its current occupation of that locus with what preceded it to classify the body as moving or at rest.
Ḥayyiz is a technical term within classical kalām, not an automatic equivalent of any modern scientific model of space or particles. The contrast concerns remaining in a place, moving to another, and the logical implications of those descriptions.
The assumption becomes disputable if an opponent allows entities that occupy no place. The reach of the premise must therefore be assessed rather than simply presumed.
3. Motion and rest in the kalām account
الحركة كونان في آنين في مكانين، والسكون كونان في آنين في مكان واحد
Motion is occupation of two places at two instants; rest is occupation of one place at two instants.
If a body occupies place A at one instant and place B at another, it is classified as moving. If it occupies A at both instants, the relationship is rest. The reference to two instants matters because the distinction requires comparing successive states.
This is one classical analysis, not a direct statement of modern mechanics. A philosophical critic may characterize motion as a continuous transition rather than the sum of fully discrete occupancies.
4. Why the preceding state matters
Suppose a body first occupies a location with no preceding occupation. What earlier state is being compared with the present kawn? This raises a subtle question about the definitions of motion and rest.
Movement as defined refers to a previous occupation elsewhere; rest refers to a previous occupation at the same place. If there is no prior occupation at all, classifying the first state under either heading cannot be accomplished merely by repeating the definitions.
The objection does not make motion or rest meaningless. It questions whether every possible occupation has been demonstrated to belong to one of the two categories.
5. An alternative analysis of motion
Philosophical accounts sometimes analyze motion as a transition between places, or as a mode of leaving a locus, rather than merely the juxtaposition of two completed occupations.
For instance, saying a continuously moving body was here and then there does not fully describe the interval of transition. The kalām formula, on the other hand, aims to identify the relevant difference between spatial states.
These are competing conceptual frameworks. A definition of the nature of motion should not be confused with an operational description used to identify that motion has taken place.
6. Premise one: no body is devoid of states
فإنها لا تخلو عن الحركة والسكون وهما حادثان
Bodies are never free of motion or rest, both of which are originated.
The first step is that a spatial body always has some spatial condition. Its relation to a preceding occupation is expressed through movement or rest. The second is to show that these conditions are originated, rather than eternal features.
Seeing some bodies move is insufficient to prove a universal claim. Equally, the hypothesis of a body that remains permanently at rest must be addressed independently rather than dismissed by definition.
7. Why motion is regarded as originated
Motion involves a transition from a prior condition to another. A particular movement was once absent, then occurred, and later ceased. That supports the origination of that particular motion.
A body's movement from A to B need not be the very same movement throughout all past time. Particular transitions begin and end. Yet the conclusion that the whole succession of motions must have a first member requires an additional argument.
The difference is crucial: “every individual movement is originated” and “no beginningless succession of movements is possible” are distinct propositions.
8. Rest, persistence and possible cessation
وكل سكون فهو جائز الزوال
Every state of rest can cease.
Rest means remaining in a location, yet the same body can later move. Therefore a current state of rest is not necessarily an unalterable eternal property. The possibility of cessation is used to support the claim that rest is originated.
An objection remains: “it can cease” is not identical to “it actually ceased.” Modal possibility, actual beginning, and observed end are different claims. Keeping them apart makes the argument more precise.
9. The objection from successive occupancies
The text raises the possibility of an occupation with no previous occupation to compare it with. Classifying every such state as either motion or rest thus needs more than the two definitions themselves.
Moreover, a philosopher who explains a body as composed of parts undergoing differently described transitions may employ a criterion of motion unlike that of the mutakallimūn. This is more than a dispute over words.
A sound argument first establishes its technical definitions, next defends the reach of its premise, and only then draws the conclusion of temporal origination. None of these steps substitutes for the others.
10. Premise two: inseparability and origination
وأما المقدمة الثانية: فإن ما لا يخلو عن الحوادث لو ثبت في الأزل لزم ثبوت الحادث في الأزل وهو محال
The second premise says that if something inseparable from originated states existed without beginning, an originated thing would have to exist in eternity—an impossibility.
The reasoning now goes beyond observing changes. It relies on a thing's necessary connection with such states and seeks a contradiction between its alleged eternity and the origination of its conditions.
The central objection is whether an eternal bearer could have an endless sequence of distinct, newly arising states. That possibility must be analyzed rather than simply overlooked.
11. Eternity versus one eternally existing event
Azal is not a particular earlier clock-time. It signifies absence of a temporal beginning. A particular originated event has a beginning, so calling that very event beginningless would contradict its characterization.
An opponent can nevertheless propose something different: each movement starts, yet the succession of different movements has no first member. No individual originated event is thereby called eternal; rather, the initial boundary of the series is in dispute.
Thus “one event is eternal” and “there is a beginningless succession of distinct events” must be analyzed as separate hypotheses.
12. First challenge: the scope of substances
أنه لا دليل على انحصار الأعيان في الجواهر والأجسام
It has not been established that all entities are confined to substances and bodies.
If non-spatial entities exist, the motion-and-rest argument for spatial bodies cannot automatically be applied to them. Philosophical systems proposed separate intellects and immaterial souls as examples.
The response contests the adequacy of the proofs for these alleged immaterial entities: an unestablished hypothesis should not overturn an argument about spatial bodies. Yet the scope of the conclusion still needs to match what the premises have actually established.
13. Possibility versus actuality of immaterial entities
The possibility of an entity without spatial location is not identical to its actual existence. The text challenges the completeness of philosophical arguments for immaterial entities.
“An incorporeal intellect can be conceived” is one claim; “an incorporeal intellect exists outside thought” is another. A universal conclusion about all actual entities must not silently import the second from the first.
Conversely, anyone denying such an entity must distinguish lack of direct sensory observation from a reasoned criticism of the offered demonstration.
14. The three proposed classes of immaterial existents
The commentary describes three classes of proposed immaterial entities in a philosophical framework:
1. Intellects: separate intellects supposedly not dependent on bodily instruments.
2. Rational souls: human souls described as capable of certain immaterial cognitions.
3. Celestial souls: souls posited to account for heavenly motions.
These are elements of a historical philosophical cosmology, not claims that modern astronomy or psychology has verified. Their importance here lies in understanding the objection to the universality of the origination proof.
15. Separate intellects and the emanation scheme
The philosophical account invokes a first intellect, further intellects, souls, and celestial spheres in a scheme of emanation. The maxim that only one can proceed from what is one is used in constructing that hierarchy.
The commentary contests the necessity of that maxim and the attempts to derive several emanations from multiple aspects within one intellect. Even if the descriptive model is internally detailed, its steps still require proof.
A coherent imagined hierarchy is not automatically a demonstrated account of what exists. Conceptual possibility, proof of existence, and historical description remain separate.
16. Human rational soul and immateriality
One argument for the immaterial rational soul appeals to our grasp of universals. We apprehend humanity or unity in general, whereas external sensation presents particular material things. Some philosophers infer that the knower must therefore be incorporeal.
The reply asks whether grasping an abstract universal logically entails the immateriality of the knower. Have alternative accounts of mental representation in bodily faculties actually been excluded?
The passage evaluates a specific classical proof about the soul. It does not purport to settle every religious question about the soul.
17. Testing the arguments about cognition
If an opponent argues that a non-divisible concept can only be known by a non-divisible soul, the missing link must be supplied: why should indivisibility of the known object entail indivisibility of its knowing subject?
The commentary's replies concerning sensory instruments and mental representations challenge that entailment. Understanding a point or unity does not, simply by itself, rule out every possible bodily aspect of cognition.
Good reasoning separates the subject, its attribute, and the necessary connection alleged between that attribute and the desired conclusion. Here that connection is precisely what is contested.
18. Celestial souls and the classification of movement
Some philosophers attributed the movements of celestial spheres to celestial souls with intention and will. They classified motion as natural, compelled, or voluntary, then argued that the heavenly motion required the third class.
The commentary objects that the classification must first be shown to exhaust the relevant possibilities; circular or sustained movement does not, by itself, prove a separate intending soul. Assumptions about the ancient spheres also enter the argument.
Voluntary celestial movement here names a feature of historical philosophy, not a verified account of contemporary astronomy.
19. Do the arguments prove every accident originated?
أن ما ذكر لا يدل على حدوث جميع الأعراض
An objection is that the preceding argument does not establish the origination of every accident.
Even if changing motion and rest are clear examples, what about other accidents such as length, breadth, depth, form, or the lights attributed to celestial bodies? Critics sometimes treat these as enduring attributes and challenge any generalization from observed motion.
A reply may reason from the bearer and the attributes inhering in it. The reasoning must still identify which accidents were shown to originate directly and which depend on further premises.
20. The circularity objection
A difficult objection is circular reasoning. If all accidents are proven originated because bodies originate, while bodies are proven originated because all their accidents originate, the conclusion has already been assumed in the premises.
An answer must distinguish classes of accidents. If the origination of some accidents, particularly motion and rest, can be established independently, one can argue from them to bodies and only then infer conclusions about other states.
The valid pattern is not to assume universal origination at the outset, but to move from independently supported premises to a broader result.
21. Eternity is not a spatial condition
أن الأزل ليس عبارة عن حالة مخصوصة
Eternity is not a particular state or condition.
To say that an eternal body must be in some occupation “in eternity” can misleadingly treat eternity as one prior moment or physical condition. Beginninglessness means lacking an initial temporal boundary, not standing at a specified earliest instant.
A hypothesis of infinitely many successive events is also distinct from one event existing eternally. If the argument relies on a contradiction, it must specify and defend the premise that a beginningless succession of originated events is impossible.
22. Absolute motion and individual motions
Some philosophical objections distinguish motion in general from particular movements. If each particular movement starts, must the entire sequence of movements also have a starting point? That is the issue.
One reply argues that motion-as-a-universal is not an independently existing external entity alongside its instances. A conceptual generality must not be transformed without argument into a separate eternal object.
Still, the distinction between each member beginning and the series having a first member remains. The argument needs to address both rather than treating them as interchangeable.
23. Fourth objection: what counts as a place?
أنه لو كان كل جسم في حيز لزم عدم تناهي الأجسام
A criticism argues that requiring every body to be in a place, under one definition, might entail an endless series of containing bodies.
A philosophical account can define place through the inner surface of a surrounding body. One can then ask what surrounds that body, and so on. If the definition is applied without qualification, a regress seems to arise.
The response depends on the meaning assigned to “place.” An implication derived from one technical definition cannot automatically be imposed on a rival definition.
24. The kalām account of location and imagined void
أن الحيز عند المتكلمين هو الفراغ المتوهم الذي يشغله الجسم وتنفذ فيه أبعاده
For the theologians, a place is a conceived void occupied by a body and extended through its dimensions.
This does not necessarily mean the real inner surface of another surrounding body. Thus “every body occupies a locus” need not imply that a further containing body always exists. The objection had transferred a condition from one definition of place into another framework.
This is a clarification of terms, not a solution to every question about physical space. Classical spatial assumptions and the logical claim of origination should remain distinct.
25. Concluding analysis of the origination proof
A responsible examination of the origination argument separates three questions:
1. Must all relevant bodies always be associated with some spatial or qualitative condition?
2. Are those conditions originated, and has a beginning of their succession been established?
3. What precise premise licenses the move from their inseparability to the body's own origination?
The challenges about immaterial entities, enduring accidents, endless successions, and definitions of place target different steps. Each should be answered at the step where it actually applies; no isolated observation substitutes for the whole proof.
Practice questions
Question 1
Which pair correctly states the two major premises of the argument from accidents?
- Bodies are inseparable from originated states; what is inseparable from them is originated
- Every originated thing is a substance; every substance is an accident
- Every body is immaterial; every immaterial thing occupies space
- Every occupation remains at one place; therefore motion is impossible
Question 2
In the cited classical definition, what is occupancy of the same place at two instants?
- Occupancy of different loci at successive instants
- Rest
- Motion
- An occupation without a previous state
Question 3
Which term is used for occupation of two locations at two instants?
- Occupying one place at two instants
- Rest
- Motion
- Occupancy of a place at one instant
Question 4
Why does the first occupation of a body challenge the given classification?
- Because the locus may have competing definitions
- Because a first occupation is always rest
- Because the prior state must always be motion
- Because there is no preceding occupation to compare
Question 5
What does the origination of one movement not by itself establish?
- That the entire sequence of movements has a first member
- That the movement occurred
- That one can speak of its beginning
- That it relates to a change of condition
Question 6
What is the proper distinction between possible cessation and actual cessation of rest?
- Possibility immediately proves past cessation
- Possible cessation does not mean actual cessation
- Actual cessation occurs only in immaterial beings
- There is no concept of rest ceasing
Question 7
What role does “cannot be free of originated states” play in the second premise?
- A universal proof that every accident requires a bearer
- The identity of the terms motion and rest
- A necessary link to originated states from which the body’s origination is inferred
- That motion-in-general is a substance
Question 8
Which account correctly distinguishes eternity from a particular originated event?
- Eternity is an extremely long but finite duration
- A sequence must begin because each of its members begins
- Eternity requires one particular spatial occupation
- Eternity means no temporal beginning; a particular originated event has its own beginning
Question 9
What objection follows from the proposed existence of immaterial entities?
- An argument from spatial motion and rest may not apply indiscriminately to every existent
- Every immaterial entity necessarily has spatial motion
- Only the dependence of accidents on bodies is disputed
- Non-spatial entities must always be at rest
Question 10
What is needed to pass from conceiving an immaterial intellect to asserting its actuality?
- Independent proof that it is impossible
- Independent evidence of actual existence
- An assumption that it inheres in some body
- Completion of lexical analysis of its meaning
Question 11
Which item is not one of the three historically described classes of immaterial entities?
- Separate intellects
- Rational souls
- Motion in general
- Celestial souls
Question 12
What is criticized in the maxim that only one proceeds from one?
- Every emanation requires a separate spatial transition
- Multiple effects from a single source are conceded to be possible
- Emanation is established by particular movements
- Its claimed logical necessity is not accepted as demonstrated
Question 13
What is the central issue in inferring the soul’s immateriality from grasping universals?
- Does grasping a universal entail that the knower is non-bodily?
- Mental representations have no role in knowing universals
- Every knower must be a spatial atom
- Knowing universals must be a discontinuous motion
Question 14
Which classification of motion occurs in the argument about celestial souls?
- Motion, rest, and occupancy
- Natural, compelled, and voluntary
- Necessary, inferential, and acquired
- Universal, particular, and personal
Question 15
Which examples illustrate the objection that not every accident has been proven originated?
- Possible persistence of human accidents
- Only a sequence of particular motions
- Length, breadth, depth, and some heavenly attributes
- Differentiation of spatial states
Question 16
When does circularity arise between proving accidents and proving substances originated?
- When bodies are proven originated independently of accidents
- When some accidents have independent origination proofs
- When the origination of motion has independent support
- When each is proven solely by relying on the other without independent support
Question 17
Which strategy best avoids circular proof?
- Independently establish the origination of some accidents before arguing to substances
- Assume universal origination of all accidents as one premise
- Make bodies’ origination the initial sole proof for accidents
- Prove accidents from bodies and bodies from accidents
Question 18
What is meant by denying that eternity is a special condition?
- Eternity means the state of no motion
- Eternity means the absence of a temporal starting point
- Eternity is a particular form of motion in general
- Eternity is an unseen independent substance
Question 19
Which distinction matters in the proposed eternity of motion-in-general?
- The distinction between each motion’s place and prior occupation
- Possible versus actual end of a particular rest
- The conceptual universal versus particular external movements
- Separate intellects versus celestial souls
Question 20
Which account of place helps generate the critic’s regress?
- Place is the property of an immaterial soul
- Place is an originated accident distinct from location
- Place is the name for an occupation in two instants
- Place is the inner surface of a surrounding body
Question 21
What is the stated kalām understanding of ḥayyiz?
- A conceived spatial void occupied by a body, not necessarily another body’s surface
- The inner surface of an external surrounding body
- The relation of rest to an earlier occupation
- The aggregate of all accidents of bodies
Question 22
What qualification may be needed in the first premise?
- No distinction between spatial and non-spatial entities
- The proof concerns spatial bodies, while other proposed entities require separate treatment
- Prove immaterial souls by motion
- Use the actual existence of some intellects to declare all entities spatial
Question 23
Which inference illegitimately jumps from originated members to a first member of the series?
- That each particular motion occurs in some locus
- Directly observing the origin of every possible body
- Every motion begins, so the whole succession necessarily has a first motion
- That an accident cannot exist without a bearer
Question 24
On what distinction does the answer to the fourth objection about place depend?
- Motion and rest being equally present in every body
- All accidents existing in only one bearer
- Defining locus as an inner dimension while excluding any environment
- Distinguishing the philosopher’s surrounding surface from the theologian’s conceived void
Question 25
Which is the sound order of the reasoning concerning motion and rest?
- Define the terms, establish the premises, then infer a conclusion
- Answer every objection solely by possibility, not actuality
- Count events and infer eternal bodies
- Assume the conclusion and construct definitions in its favor
Question 26
How should the material on separate intellects and celestial souls be approached?
- Treat them as a decisive mathematical proof of motion’s origination
- As a historical philosophical argument with disputed premises
- Treat them as undisputed among all theologians
- Present them as experimentally established astronomy
Question 27
The origination of each particular motion, by itself, establishes a first member of the whole series.
Question 28
The discussion distinguishes conceivability of immaterial entities from proof of their actual existence.
Question 29
If the origination of substances depends entirely on that of accidents and vice versa, a circular proof results.
Question 30
In the stated kalām account, a locus is necessarily the actual inner surface of another surrounding body.
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