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Ibn Rushd (Averroes) (1126 – 1198 CE)

Abu al-Walid Muhammad ibn Ahmad ibn Rushd, better known in the Latin West as Averroes, lived during a unique period in Western intellectual history, in which interest in philosophy and theology was waning in the Muslim world and just beginning to flourish in Latin Christendom. Just fifteen years before his birth, the greatest critic of Islamic philosophy, al-Ghazzali (1058-1111), had died after striking a deadly blow to Muslim Neoplatonic philosophy, particularly the work of the great philosopher Ibn Sina (980-1037). From such bleak circumstances emerged the Spanish-Muslim philosophers, of which the jurist and physician Ibn Rushd came to be regarded as the final and most influential Muslim philosopher, especially to those who inherited the tradition of Muslim philosophy in the West.

Philosophy and Religion

Until the eighth century, and the rise of the Mutazilite theology, Greek philosophy was viewed with suspicion. Despite the political support given to philosophy because of the Mutazilites and the early philosophers, a strong anti-philosophical movement rose through theological schools like the Hanbalites and the Asharites. These groups, particular the latter, gained public and political influence throughout the tenth and eleventh century Islamic world. These appealed to more conservative elements within society, to those who disliked what appeared to be non-Muslim influences. Ibn Rushd, who served a political dynasty that had come into power under a banner of orthodox reform while privately encouraging the study of philosophy, was likely sensitive to the increasing tensions that eventually led to his banishment. Though written before his exile his Decisive Treatise provides an apologetic for those theologians who charged philosophers with unbelief.

Ibn Rushd begins with the contention that Law commands the study of philosophy. Many Quranic verses, such as "Reflect, you have a vision" (59.2) and "they give thought to the creation of heaven and earth" (3:191), command human intellectual reflection upon God and his creation. This is best done by demonstration, drawing inferences from accepted premises, which is what both lawyers and philosophers do. Since, therefore, such obligation exists in religion, then a person who has the capacity of "natural intelligence" and "religious integrity" must begin to study philosophy. If someone else has examined these subjects in the past, the believer should build upon their work, even if they did not share the same religion. For, just as in any subject of study, the creation of knowledge is built successively from one scholar to the next. This does not mean that the ancients' teachings should be accepted uncritically, but if what is found within their teachings is true, then it should not be rejected because of religion. (Ibn Rushd illustrated this point by citing that when a sacrifice is performed with the prescribed instrument, it does not matter if the owner of the instrument shares the same religion as the one performing the sacrifice.)

The philosopher, when following the proper order of education, should not be harmed by his studies, hence it is wrong to forbid the study of philosophy. Any harm that may occur is accidental, like that of the side effects of medicine, or from choking on water when thirsty. If serious harm comes from philosophical study, Ibn Rushd suggests that this is because the student was dominated by their passions, had a bad teacher or suffered some natural deficiency. Ibn Rushd illustrates this by quoting a saying of the Prophet Muhammad, when asked by a man about his brother's diarrhea. The Prophet suggested that the brother should drink honey. When the man returned to say that his brother's diarrhea had worsened, the Prophet replied, "Allah has said the truth, but your brother's abdomen has told a lie" (Bukhari 7.71.588).

Not all people are able to find truth through philosophy, which is why the Law speaks of three ways for humans to discover truth and interpret scripture: the demonstrative, the dialectical and the rhetorical. These, for Ibn Rushd, divide humanity into philosophers, theologians and the common masses. The simple truth is that Islam is the best of all religions, in that, consistent with the goal of Aristotelian ethics, it produces the most happiness, which is comprised of the knowledge of God. As such, one way is appointed to every person, consistent with their natural disposition, so that they can acquire this truth.

For Ibn Rushd, demonstrative truth cannot conflict with scripture (i.e. Qur'an), since Islam is ultimate truth and the nature of philosophy is the search for truth. If scripture does conflict with demonstrative truth, such conflict must be only apparent. If philosophy and scripture disagree on the existence of any particular being, scripture should be interpreted allegorically. Ibn Rushd contends that allegorical interpretation of scripture is common among the lawyers, theologians and the philosophers, and has been long accepted by all Muslims; Muslims only disagree on the extent and propriety of its use. God has given various meanings and interpretations, both apparent and hidden, to numerous scriptures so as to inspire study and to suit diverse intelligences. The early Muslim community, according to Ibn Rushd, affirmed that scripture had both an apparent meaning and an inner meaning. If the Muslim community has come to a consensus regarding the meaning of any particular passage, whether allegorical or apparent, no one can contradict that interpretation. If there is no consensus about a particular passage, then its meaning is free for interpretation. The problem is that, with the international diversity and long history of Islam, it is all but impossible to establish a consensus on most verses. For no one can be sure to have gathered all the opinions of all scholars from all times. With this in mind, according to Ibn Rushd, scholars like al-Ghazzali should not charge philosophers with unbelief over their doctrines of the eternity of the universe, the denial of God's knowledge of particulars, or denial of bodily resurrection. Since the early Muslims accepted the existence of apparent and allegorical meanings of texts, and since there is no consensus on these doctrines, such a charge can only be tentative. Philosophers have been divinely endowed with unique methods of learning, acquiring their beliefs through demonstrative arguments and securing them with allegorical interpretation.

Therefore, the theologians and philosophers are not so greatly different, that either should label the other as irreligious. And, like the philosophers, the theologians interpret certain texts allegorically, and such interpretations should not be infallible. For instance, he contends that even the apparent meaning of scripture fails to support the theologian's doctrine of creation ex nihilo. He highlights texts like 11:7, 41:11 and 65:48, which imply that objects such as a throne, water and smoke pre-existed the formation of the world and that something will exist after the End of Days.

A teacher, then, must communicate the interpretation of scripture proper for his respective audiences. To the masses, Ibn Rushd cautions, a teacher must teach the apparent meaning of all texts. Higher categories of interpretations should only be taught to those who are qualified through education. To teach the masses a dialectical or demonstrative interpretation, as Ibn Rushd contends Ghazzali did in his Incoherence, is to hurt the faith of the believers. The same applies to teaching a theologian philosophical interpretations.

Origin of the World

Turning from the attributes of God to the actions of God, where he delineates his view of creation, Ibn Rushd in his Tahafut al-Tahafut clearly deals with the charge against the philosopher's doctrine on the eternity of the physical universe in his polemic against al-Ghazzali. Ghazzali perceived that the philosophers had misunderstood the relationship between God and the world, especially since the Qur'an is clear on divine creation. Ghazzali, sustaining the Asharite emphasis on divine power, questioned why God, being the ultimate agent, could not simply create the world ex nihilo and then destroy it in some future point in time? Why did there need to be some obstacle to explain a delay in God's creative action? In response to this, Ghazzali offered a number of lengthy proofs to challenge the philosopher's assertions.

Ibn Rushd, who often labeled Ghazzali's arguments dialectical, sophistical or feeble, merely replied that the eternal works differently than the temporal. As humans, we can willfully decide to perform some action and then wait a period of time before completing it. For God, on the other hand, there can be no gap between decision and action; for what differentiates one time from another in God's mind? Also, what physical limits can restrict God from acting? Ibn Rushd, in the first discussion, writes about how Ghazzali confused the definition of eternal and human will, making them univocal. For humans, the will is the faculty to choose between two options, and it is desire that compels the will to choose. For God, however, this definition of will is meaningless. God cannot have desire because that would entail change within the eternal when the object of desire was fulfilled. Furthermore, the creation of the world is not simply the choice between two equal alternatives, but a choice of existence or non-existence. Finally, if all the conditions for action were fulfilled, there would not be any reason for God not to act. God, therefore, being omniscient and omnipotent would have known from the eternal past what he had planned to create, and without limit to his power, there would no condition to stop the creation from occurring.

Ghazzali's argument follows the typical Asharite kalam cosmological argument, in that he argues the scientific evidence for the temporal origin of the world, and reasons from that to the existence of a creator. Ghazzali's first proof contends that the idea of the infinite number of planetary revolutions as an assumption of the eternity of the world is erroneous since one can determine their revolution rates and how much they differ when compared one to another. Ibn Rushd weakly maintains that the concept of numbered planetary revolutions and their division does not apply to eternal beings. To say that the eternal can be divided is absurd since there can be no degrees to the infinite. Oliver Leaman explains how Ibn Rushd accepted accidental but not essential infinite series of existents. There can be an infinite chain of human sexual generation, but those beings that are essentially infinite have neither beginning nor end and thus cannot be divided.

In his Decisive Treatise Ibn Rushd summarily reduces the argument between the Asharite theologians and the ancient philosophers to one of semantics. Both groups agree that there are three classes of being, two extremes and one intermediate being. They agree about the name of the extremes, but disagree about the intermediate class. One extreme is those beings that are brought into existence by something (matter), from something other than itself (efficient cause) and originate in time. The second, and opposite, class is that which is composed of nothing, caused by nothing and whose existence is eternal; this class of being is demonstratively known as God. The third class, is that which is comprised of anything or is not preceded by time, but is brought into existence by an agent; this is what is known as the world. Theologians affirm that time did not exist before the existence of the world, since time is related to the motion of physical bodies. They also affirm that the world exists infinitely into the future. As such, since the philosophers accept these two contentions, the two groups only disagree on the existence of the world in the eternal past.

Since the third class relates to both the first and second classes, the dispute between the philosophers and the theologians is merely how close the third class is to one of the other two classes. If closer to the first class, it would resemble originated beings; if closer to the second class, it would resemble more the eternal being. For Ibn Rushd, the world can neither be labeled pre-eternal nor originated, since the former would imply that the world is uncaused and the latter would imply that the world is perishable.

Ibn Rushd finds pre-existing material forms in Quranic texts such as 11:9, where he maintains that one finds a throne and water pre-existing the current forms of the universe; he contends that the theologians' interpretation of such passages are arbitrary. This is because nowhere in the Qur'an is the idea of God existing as pure being before the creation of the world to be found.

The debate for Ibn Rushd and Ghazzali centers, ultimately, upon the idea of causation. Ghazzali, the dedicated Asharite, wants to support the position that God is the ultimate cause of all actions; that no being in the universe is the autonomous cause of anything. For instance, a spark put on a piece of wood does not cause fire; rather God causes the fire and has allowed the occasion of spark and wood to be the method by which he creates fire. God, if he so desired, could simply will fire not to occur when a spark and wood meet. For Ghazzali, this is the explanation of the occurrence of miracles: divine creative actions that suspend laws habitually accepted by humans. Ghazzali, in his Tahafut, speaks of the decapitated man continuing to live because God willed it so.

Ibn Rushd, the consummate Aristotelian, maintains in his Tahafut Aristotle's contention that a full explanation of any event or existence needs to involve a discussion of the material, formal, efficient and final cause. Ibn Rushd, then, insists that Ghazzali's view would be counter-productive to scientific knowledge and contrary to common-sense. The universe, according to the human mind, works along certain causal principles and the beings existing within the universe contain particular natures that define their existence; if these natures, principles and characteristics were not definitive, then this would lead to nihilism (i.e. the atheistic materialists found in the Greek and Arab worlds). As for the idea of cause and effect being a product of habitual observation, Ibn Rushd asks if such observations are a product of God's habit or our own observations. It cannot, he asserts, be the former, since the Qur'an speaks of God's actions as unalterable. If the latter, the idea of habit applies only to animate beings, for the habitual actions of inanimate objects are tantamount to physical laws of motion.

Metaphysics

Metaphysics, for Ibn Rushd, does not simply deal with God or theology; rather it concerns itself with different classes of being and the analogical idea of being. It is, thus, a science that distinguishes inferior classes of being from real being. Ibn Rushd, the adamant Aristotelian, puts his own slant on Aristotle's metaphysics. Ibn Rushd's classification of being begins with accidental substances, which are physical beings, then moves to being of the soul / mind and finally discusses whether the substance existing outside the soul, such as the sphere of the fixed stars, is material or immaterial. This hierarchy, notes Charles Genequand, differs from Aristotle's hierarchy of material beings, beings of the soul / mind and unchangeable entities. The first and third categories of both thinkers are somewhat similar in that they encompass a straight demarcation between material and immaterial being. Ibn Rushd's second class of being, however, includes both universals and mathematical beings; and as such cannot be the bridge between physics and metaphysics as it is in Aristotle. Rather, he contended that all autonomous beings, whether material or not, constitute a single category. This was likely a response to the more materialistic interpretations of Aristotle, such as that of Alexander of Aphrodisias, for Ibn Rushd did not see physics and the metaphysical at opposite sides of the spectrum.

Substance, not beings of the mind, was the common link between physics and metaphysics for Ibn Rushd. Substance, therefore, has an ontological, though not necessarily temporal, priority over other parts of being. Since, then, metaphysics covers both sensible and eternal substances, its subject matter overlaps with that of physics. In the cosmos, then, there are two classes of eternal things, the essentially eternal and the numerically eternal. This division represents the separation between the celestial realm and the physical universe, where the living beings in the latter are bound to an eternal cycle of generation and corruption, while the former are immortal animals. Ibn Rushd does not contend that celestial bodies cause the world, rather the motion of these bodies are the "principle" of what occurs on earth.

This point is more fully developed in Ibn Rushd's discussion regarding spontaneous generation: the idea that certain beings are created by external agents without being subject to the cycle of generation and corruption. This was a common subject of debate throughout later Greek and medieval philosophy. If beings like insects spontaneously generated from rotting food are externally generated, therein lies proof for a created universe and Asharite occasionalism, neither of which Ibn Rushd maintains. His solution is the Aristotelian doctrine of emanation, which states that no being is created but merely is the principle that unites matter and form. Since Ibn Rushd asserts that physical generation is the product of both seed, which contains forms in potentiality, and solar heat, the sun being a heavenly being; spontaneous generation, in which the seed is absent, is merely the effect of solar heat upon the basic elements (i.e. earth and water).

In the cosmological sphere, according to physics, one finds things that are both moving and moved at once and things that are only moved. Therefore, there must be something that imparts motion but is never moved; this is the Prime Mover (i.e. God). Physics, thus, provides the proof for the existence of a prime mover and metaphysics is concerned with the action of this mover. The Prime Mover is the ultimate agent for Ibn Rushd and it must be eternal and pure actuality. It did not merely push the universe into existence and remain idle thereafter, for the universe would slip into chaos. Ibn Rushd acknowledges that the idea of actuality being essentially prior to potentiality counters common sense, but to accept the opposite would entail the possibility of spontaneous movement or negation of movement within the universe.

How, then, is the prime mover the principle of motion and causation in the cosmos without being moved itself? Ibn Rushd contends that the prime mover moves the cosmos, particularly the celestial bodies, by being the object of desire. Celestial beings have souls, which possess the higher power of intellect and desire, and these beings desire the perfection of God, thereby they move accordingly. Desire in the celestial beings, according to Ibn Rushd, is not the real faculty it is in humans. Since these beings have no sense perception, desire is united with intellect causing a desire for what rationally is perfection – the Prime Mover.

Ibn Rushd rejects the Arab Neoplatonic doctrine of emanation because it simply implies a temporal succession of one being producing another, which is impossible for eternal beings. By this rejection, however, Ibn Rushd recognizes a problem within his system. If God is intellectually present within the celestial bodies, there is no need for them to move in an effort to acquire this perfection. Ibn Rushd responds with an analogy of a cabinet-maker, who has the idea of a cabinet existing in his mind, but his body needs to move in order to imprint this idea upon matter. Celestial beings move in likewise matter, in order to obtain perfection, which produces the physical universe. Furthermore, this effort to obtain perfection in the celestial bodies, which is in imitation of God, effects the order of the universe.

With the Prime Mover, the celestial bodies and the physical world, Ibn Rushd has a three level cosmological view. He illustrates his cosmological order by using the analogy of the state, where everyone obeys and imitates the king. All smaller social units in the kingdom, like the family, are subordinate to the head, which is ultimately under the authority of the king. There is a hierarchy among the spheres of celestial beings, based on their "nobility" (sharaf) and not, as Avicenna held, on their order in emanation. Of course, the order of nobility parallels emanation's order, for the hierarchical order is that which we see in the universe, the fixed stars, the planets, the moon and the earth. Like a king, the Prime Mover imparts motion only to the First Body (the sphere of the fixed stars), which becomes the intermediary for the other bodies. This leads to the other spheres (i.e. planets) to desire both the Prime Mover and the First Body, which, according to Ibn Rushd, explains how the celestial bodies move from east to west at one time and from west to east at another time. It is the desire of one that moves the planets in one way, and the desire of the other that moves them in the opposite direction.

Ultimately, as H. Davidson notes, Ibn Rushd has a cosmos in which the earth is its physical center. Surrounding the earth, at different levels, are the celestial spheres, which contain celestial bodies (e.g. the sun, moon, stars and planets), which all revolve around the earth. The motion of these spheres is attributed to immortal intelligences, governed by a primary immutable and impersonal cause. Each sphere exists in its own right, though somehow the intelligence is caused by the Prime Mover, and it is through their contemplation of the Prime Mover they receive perfection equivalent to the position they hold in the cosmological hierarchy. As such, God no longer is restricted to being a cause of one thing. The active intellect is the last sphere in the hierarchy, but is not the product of another, and like the other intelligences its cognition is fixed on God. This idea has significant influence on Ibn Rushd's doctrine of the human soul and intellect.

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