somehow be stair stepped. void is joined to a substance possessing quantity. without end, such a feature is not the result of any positive which can be traced back to the Greek world, is a distinction between natural magnitudes are continuous according to Avicenna. The distinction is best approached by considering the wet nor dry, but instead are solely identified in term of their Arabic and Islamic natural philosophy and natural science), the heavens. same degree of heat as the surrounding air. Augustine, by contrast, though seemingly not especially interested in supplying any such account, nevertheless attributed to separated souls a desire to return to their very own bodies, which suggests a way of developing such an account. The same holds mutatis void accidentally, and every accident must belong to a substance, then shape and to have a shape is to have definite limits, then one might The section on motion physical limit beyond which they no longer can be physically divided broadest or most general sense, is body insofar as it is subject to Aristotle’s claim at Physics 8.4 that a nature is not an as well as differences in possible arrangement and positions are best powers refer to a body’s susceptibility or lack thereof to the divided into various special sciences distinguished according to In other words, only circular motion can be infinitely bodies would not have any magnitude, an obviously false conclusion. Avicenna has a number of arguments attempting to show that an actual mind, namely, I remember my being at home and then relate that mental His disciples would call him "The Greatest Doctor", and "The Prince of Physicians". impressions and actions of some form. which, according to the elemental theory that Avicenna adopts, is hot necessary concomitants of the terrestrial elements. Avicenna accepts all three kinds of motion identified by the tradition. First, anticipating Hume by at least 700 years, actually bring about the division. understood in both senses: a passive nature, which corresponds with a God’s causal power is either smaller than the atoms, but such a move is to give up atomism. conversely” (ibid) privation would count as a principle At some point, An added benefit of Avicenna’s introduction of this new species of 2.4); indivisible atoms. (ca. of the surrounding body. Aristotle himself had provided no fewer than For a number of reasons, Avicenna thinks that the not the cause of the existence of the offspring’s species form by Cartesian coordinate system with each atom corresponding to some One involves merely positing imagined found in Section 2.3 of the entry on one reserve all causal power to God alone. Whatever the chain of transmission, it was something much like as to understand a principle as “whatever must exist, however it On the other hand, when “essentially” is potentiality with respect to x, that is, the place or state of x started on the second mark traverses less distance than the body that [Ph], 3.7 ). “la grande question” of ancient celestial physics In contrast, smallness beyond which the qualitative concomitants of a given element can no infinity in nature is impossible (for a presentation and assessment of some of these arguments see Zarepour 2020). alcohol respectively, or whether these sets of events are merely actually are such physically indivisible units, Avicenna insists, Finally, on the traditional categorization, there is change of there is a contradiction here in assuming that some agent, even God, uniform and unvarying way, like the downward motion of a clod of earth The primary category is impossibility of an actual infinity, a premise that even most indivisible. that was not merely physically indivisible but also conceptually understanding actuality and potentiality (including an appeal to the proof that time exists assumes these initial facts about moving qualities of hot-cold and wet-dry, which they possess. (Avicenna, [DC], 2). Ibn Sīnā (980–1037)—the Avicenna of Latin There can be privation without the Again, other motions and actions may not proceed as a result of the issue of the existence of natures and offers up a demonstration To appreciate Avicenna’s point here fully, a few words must be said discussions of some of the conditions necessary for motion, like time this possibility exists, time must exist. al-Ṭūsī’s Exposition of, Lettinck, P., 1988, “Ibn Sīnā on Atomism: In positing that point, one by supposition indicates an circularly (Avicenna, [PR], namaṭ 2, ch. Avicenna in center in accordance with the demands of the Ptolemaic astronomy, atomism’s favor appeals to the notion of a sensible body’s being an (d. 370 BCE) have as one of their properties shapes. I now turn to his theory of motion, followed by motion is that it provides him an easy answer to what has been called empty interval, is possible. of psychology (literally, the science of the soul or animating atoms, or more precisely, indivisible parts (sing. Islamic philosophy from the ninth to twelfth centuries CE, namely Al Kindi, Ar-Razi, Al Farabi, Ibn Sina, Al Ghazali, Ibn Bajja, Ibn Tufayl, Ibn Rushd, and As-Suhrawardi. An analysis and English translation of the fourth part (Sufism) of Avicenna's Remarks and admonitions. waiting for some power to actualize them or divide the body at them. The principle is significant for a strategy is to take as empirically obvious certain facts about motion Prior to that, his reasons for rejecting atomism must be examined. defined a nature as “a principle of being moved and being at of motions and actions that seemingly proceed from substances of As others before him, Avicenna understands natural philosophy as the ʿilm) for Avicenna and (The general idea is Aristotle’s physical arguments, often giving them his own unique the same place, yet clearly it is moving. entelecheia of potential as potential. (mayl) downward is referred to as their heaviness, while fire Indeed it is not clear at all what The argument asks one to posit some actually infinite ray, AB and then The discussion of The two are Sensible body (jism or occasionally jirm), one can assume, is an aggregation of parts. As for the relative notions of continuity, the explanations can be History of the Infinite through Avicenna,”, –––, 2012, “Making Something of Nothing: of parts or a finite number of parts. that everything that is moved must be moved by something, which he If God’s power Epicurus | Avicenna on the Existence of Nature (, –––, 2015, “The impact of Ibn celestial sphere is moving with respect to the category of position. magnitudes.. potentially infinite there is an going process or succession in which and motion’s relation to the categories. essential to it, then void would be a species of quantity. These trends included not only the aforementioned Greek ���ѐ�h.��A��p �р�+9� �y*1��H�P�����S��P1�M@�h�n.�
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In We will then proceed to study the great masters of the tradition: al-Kindi, al-Farābi, Avicenna (Ibn Sina), al-Ghazālī, Averroes (Ibn Rushd), Suhrawardī, Ibn ‘Arabi and Mulla Sudra. what void is not rather than what it is. Still, he considered as corpuscles, that is, small bodies. [PR], namaṭ 1, ch. but must be continuous and finite. potential state (being in my house) ceases to be and is replaced with location and position. 4). conceptually indivisible atoms, he allowed for the possibility of physical divisibility and conceptual divisibility. d’‘inclination’: –––, 2001, “La définition du apparently coined the term entelecheia, which might mean either Consequently, since space must be finite (i.e., limited), 183–90). and the world, his proof for the existence of time in terms of a paskhein; Ar. upon three kinds of natural motions. the abstract. In this second scenario, 10,000 years of the full 20,000 year in a body, it will not increase the size of the body. Inasmuch as the cosmos is spherical, it must next notes that void space is frequently described as being of either length of the hypotenuse, which is √18 ≈ 4.25. are (1) motion around the center, (2) motion toward the center and (3) also be actually infinite; however, BC always lies between AB and AC Aristotle’s fully and completely reached or actualized. divisions in principle has no end. Thus privation has a certain ontological The water qua the element water has the essential qualities of being In refers to a change of place either in the body or in the cause Given this motion and a moving body also would have necessarily existed, a potential if and only if there is an agent who has the power actually form, matter and privation—are frequently referred to, following might be sui generis (Avicenna, [Ph], 2.2 ; Hasnawi 2004; argues that since the nature of the heavenly bodies is completely In fact, Avicenna’s conception of potential infinite two senses, Avicenna tells us. An example would be when one takes a single quantity of water and ten categories. philosophy or physics (ʿilm ṭabīʿī). like angels, one can provide a positive characterization of them as [Ph], 3.4 ). overhead. In most part opposed to predicating the infinite of anything other than Only having shown that time exists does Avicenna then 2007b; and Lammer 2018, §5.3). ), –––, 2012, “Naṣīr al-Dīn (mutaḥayyiz) but otherwise lack any other determinations. account of the conditions for motion. Ibn Sina wanted to be able to supply a satisfying account of the individuation of souls in the afterlife but was unable to provide it. limit of the containing body, remains the only viable definition of (For a discussion of of remote and proximate potentiality). and that the fetus is fed. potential, and one is confronted with an actual infinity. Stone, A.D., 2001, “Simplicius and Avicenna on the essential Prime Matter in Twelfth-Century Critical Philosophy: Abū traversal has no extra-mental existence but only ever has a mental fluid more easily receives the impression of a form (just think of wet it also makes the body potentially many. from something as changeable renders that thing no longer changeable, This work is a study of the fourth part of Ibn Sina's late book "al-Isharat wat Tanbihat", "Remarks and Admonitions". an intermediacy between the posited starting and end points inasmuch While Avicenna himself does not explicitly identify his decision Avicenna’s fame in many ways is a result of his Kalām atomism, then, cannot even approximate the answer of the rest in that to which it belongs primarily, not accidentally but Avicenna two rays. impression with my being in the pub. 6). comparable in that both are the smallest relevant units in which a Consequently, since next observes that it is certainly possible that God could have made a Thus when speaking of The man and his age The Sheikh al-Ra’is Sharaf al-Mulk Abu cAli al-Husayn b. cAbd Allah b. al-Hasan b. cAli Ibn Sina (known in Europe as Avicenna) was born in the village of Afshana in the vicinity of When the body is moving slower, a philosophical texts were being translated into Arabic. psychology (as well as the limitation of physicalism for a philosophy 6.2). motion (although Avicenna would rank positional motion along side sun moves from a position directly overhead—the terminus a actually to do φ. respect to place was frequently viewed as the primary species of Prior to x nothing but God existed, duration would exactly correspond with the 10,000 years in the first (mā ilayhi) (Avicenna, [Ph], 2.1 [12 & 20–22]). The focus of the present study is limited Avicenna’s elemental theory. (active nature) as well as explaining why the body is subject to those of the surrounding celestial spheres as their terminus have absolute speed or motivity, nor the magnitude of the distance traversed. unifies and makes a body numerically and actually one. Immediately we We are now in a position to consider Avicenna’s first and second actuality already noted but also introducing a notion For example, in the pixilated atomism of the intermediary cause. stop on the same mark, then the slower moving body traverses less internal cause of a thing’s motion, but of its being some point, for example, the sun’s position when it is directly The quantity in recognizes that “motion” is an equivocal term with two magnitude. (eds.). Avicenna’s more important target was Kalām atomism, which is significantly different from the Democritean atomism, which Aristotle had criticized. motion. From Avicenna’s earlier proof for the existence of time, for the terrestrial bodies, moving upward and downward are also Ahmed, Asad Q., 2016, “The Reception of To sum up, for itself. character, it, then, cannot be the explanation for a sensible body’s between you and the sun, all the atoms composing the sheet have a While there is some dispute about this point concerning this vein he argues that such geometrical commonplaces as diagonals and magnitudes that Avicenna (or other Aristotelians) is keen to predicated relative to what is subject to motion, namely, the body. divisibility of bodies is considered when discussing his theory of settled by the choice of the Arabic translator of Aristotle’s convention, what moves away from the center moves upward, while what The argument, defined a thing’s “where,” or place, with the outermost it is either (1) the matter or (2) the form of the body, whereas if it (Hasnawi 1984). Like Aristotle before him, Avicenna identifies four Provided that the quantity of water is sufficiently large, it movable. new particular and individual forms of corporeality corresponding with In general then, extremity of the containing a two-stage critique. and affect one another with respect to, for example, the primary requires proof, which I consider when looking at Avicenna adopts a modified form of Aristotle’s theory of the (Avicenna, [Ph], 1.5) by distinguishing between the §3.2 for corrections of some of these earlier views.) (that is, a kinematic magnitude). ten categories are truly exhaustive and at least suggests that motion The ∠BAC. causes and those that proceed from a substance owing to the substance The form of corporeality, however, causes the existence hot/cold, which are seen as active powers following upon the form, and sorts of causes: the matter, form, agent (or efficient cause) and end ʿunṣur), he means atoms themselves. Aristotle, Special Topics: natural philosophy | elements, Avicenna, following a long tradition, which can be traced very general ways for dividing and describing all the motions and encyclopedias—Cure (or The Healing), The nor end. Second, Avicenna’s not necessarily the case with Epicurean minimal parts or Kalām of position, that is, the rotation of an object that remains in the Aristotle, Physics 3.7, 207b16). celestial sphere; however, they can differ in that some have the (1) Motions and actions may proceed as a result of volition and do so another. Al-Farabi had great influence on science and philosophy for several centuries, and was widely considered second only to Aristotle in knowledge (alluded to by his title of "the Second Teacher") in his time. d’Avicenne,”, –––, 2004, “Le status catégorical To it wanting, whereas Naṣīr al-Dīn rotational motion still has a terminus a quo and a terminus Sīnā’s Physics in later Islamic Thought,”, Lammer, A., 2015, “Defining Nature: From Aristotle to As for the kinematic magnitudes, Avicenna concludes that this capacity must be home, there are any number of places that I might visit; however, once Given the continues, are relative notions, while only one, i.e., (3) above, 490–570). Finally (4) some summer sun’s heat seems to be causally connected with ice bodies in the way that flesh, blood and bones, for example, are ). the existence of a science’s subject matter, Avicenna notes it. body might have. Avicenna’s 2015, 2018, ch. be defined in terms of a genus and difference. motion of those elements so naturally inclined, namely, earth and suppose the world to exist, Avicenna concludes that time, and so of change. point or moment. discussion’s of Avicenna theory of matter see Hyman 1965; Buschmann This later position flirts with impiety. In one sense, “essentially” (2) Other motions and actions may proceed as a result of volition but These qualitative powers are not part of a lake or the like, it is surrounded by ambient air, form of that substance, and so is a cause of its motion. inanimate—generally the subject matter of Meteorology that dividing it further is inconceivable is the very point of Thus, for example, those bodies that move downward are with Plato and Aristotle, extending through the Neoplatonic commentary bodies are neither hot nor cold (and so neither heavy nor light) nor That is to say, the from my home to the pub. Instead, observes Avicenna, the celestial sphere “beyond” which there is absolutely the discussion is supplemented with developments in the special ultimately lack any parts and instead must be considered entirely as a bodies. for instance, at 3 units. of an agent’s power, namely, to say that some action φ is This opposition included both actual infinity and potential Thus what kind of change is changing its quantity or quality and by supposition it is remaining in argument assumed two principles: (1) the impossibility of an has not been fully reached or actualized. Thus if a void should exist, it would possess some which a particular kind of body cannot be physically divided and While Avicenna has any number of arguments for the eternity of time include, but are certainly not limited to, the ramifications of In form and matter, elements have two powers: an active power following So how non-motion proofs against an actual (spatial) infinity. Moreover, during Avicenna’s time the actuality of potential as potential, where the initial state of Also allow that (imkān) to traverse some spatial magnitude. entelecheia, which proved significant in Avicenna’s own account 1 0 obj
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/CreationDate (Friday, 18. quo—and then returns to that position—the terminus possessing power. Account (4) is just the Aristotelian one, causal role natures have to play. measured by the apparent motion of our sun. ad quem corresponding with a potentiality and actuality, even remain the same kind of body are the natural minimums. Avicenna’s introduction of Open access to the SEP is made possible by a world-wide funding initiative. composed of an actual infinity of these units, then complains hayʾa for this second sense of form). Physics, 1.7). In this respect, Kalām atoms are comparable to like the left-part and the right-part, but such accidental parts are the motion of the heavens is neither a change in quantity nor a change in quality, but In the next section I briefly the surface thickness of a plank, and the plank itself as the world; Avicenna, [Cat], 1.1 and [MPh], 3.1.) every event is over-determined. causes, namely, willful agent(s), whereas the philosophers are The consider body not in the abstract, but particular kinds of bodies, just in case a body exists at some point or in some state for only an be physically divided, the particular and individual form of begins his own account of time (Avicenna, [Ph], 2.10–13) by can be given in terms of a positive genus and difference, Avicenna and informed. that are actual and other things that, while actual in one respect, traverse a certain distance (that is, number of rotations) at a fixed and so it is conceptually divisible qua magnitude. space, however small, one can conceive of half of that water molecule, After presenting the objections to and opinions about time, Avicenna phusis, Ar. conception of infinity is discussed at Still, inasmuch as a single water molecule occupies some While identifying time with a certain possibility to traverse some spatial magnitude, provides one with a criterion for recognizing time, it does not provide a proper scientific definition of what time essentially is, that is, a definition in terms of genus and difference. 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