Part 6 (1/2)
[80:2] ”Moreover truth for him (Ibn Hait_h_am) was only that which was presented as material for the faculties of sense-perception, and which received it from the understanding, being thus the logically elaborated perception”. (Boer's Philosophy in Islam, p. 150).
[80:2] ”Moreover truth for him (Ibn Hait_h_am) was only that which was presented as material for the faculties of sense-perception, and which received it from the understanding, being thus the logically elaborated perception”. (Boer's Philosophy in Islam, p. 150).
CHAP. IV.
CONTROVERSY BETWEEN IDEALISM AND REALISM.
The As_h_'arite denial of Aristotle's Prima Materia, and their views concerning the nature of s.p.a.ce, time and causation, awakened that irrepressible spirit of controversy which, for centuries, divided the camp of Muhammedan thinkers, and eventually exhausted its vigor in the merely verbal subtleties of schools. The publication of Najm al-Din Al-Katibi's (a follower of Aristotle whose disciples were called Philosophers as distinguished from scholastic theologians) ?ikmat al-'Ain--”Philosophy of Essence”, greatly intensified the intellectual conflict, and invoked keen criticism from a host of As_h_'arite as well as other idealist thinkers. I shall consider in order the princ.i.p.al points on which the two schools differed from each other.
A. _The Nature of the Essence._
We have seen that the As_h_'arite theory of knowledge drove them to hold that individual essences of various things are quite different from each other, and are determined in each case by the ultimate cause--G.o.d.
They denied the existence of an everchanging primary stuff common to all things, and maintained against the Rationalists that existence const.i.tutes the very being of the essence. To them, therefore, essence and existence are identical. They argued that the Judgment, ”Man is animal”, is possible only on the ground of a fundamental difference between the subject and the predicate; since their ident.i.ty would make the Judgment nugatory, and complete difference would make the predication false. It is, therefore, necessary to postulate an external cause to determine the various forms of existence. Their opponents, however, admit the determination or limitation of existence, but they maintain that all the various forms of existence, in so far as their essence is concerned, are identical--all being limitations of one Primary substance. The followers of Aristotle met the difficulty suggested by the possibility of synthetic predication, by advocating the possibility of compound essences. Such a judgment as ”Man is animal”, they maintained, is true; because man is an essence composed of two essences, animality and humanity. This, retorted the As_h_'arite, cannot stand criticism. If you say that the essence of man and animal is the same, you in other words hold that the essence of the whole is the same as that of the part. But this proposition is absurd; since if the essence of the compound is the same as that of its const.i.tuents, the compound will have to be regarded as one being having two essences or existences.
It is obvious that the whole controversy turns on the question whether existence is a mere idea or something objectively real. When we say that a certain thing exists, do we mean that it exists only in relation to us (As_h_'arite position); or that it is an essence existing quite independently of us (Realist position)? We shall briefly indicate the arguments of either side. The Realist argued as follows:--
(1). The conception of my existence is something immediate or intuitive.
The thought ”I exist” is a ”concept”, and my body being an element of this ”concept”, it follows that my body is intuitively known as something real. If the knowledge of the existent is not immediate, the fact of its perception would require a process of thought which, as we know, it does not. The As_h_'arite Al-Razi admits that the concept of existence is immediate; but he regards the judgment--”The concept of existence is immediate”--as merely a matter of acquisition. Mu?ammad ibn Mubarak Buk_h_ari, on the other hand, says that the whole argument of the realist proceeds on the a.s.sumption that the concept of my existence is something immediate--a position which can be controverted.[84:1] If, says he, we admit that the concept of my existence is immediate, abstract existence cannot be regarded as a const.i.tutive element of this conception. And if the realist maintains that the perception of a particular object is immediate, we admit the truth of what he says; but it would not follow, as he is anxious to establish, that the so called underlying essence is immediately known as objectively real. The realist argument, moreover, demands that the mind ought not to be able to conceive the predication of qualities to things. We cannot conceive, ”snow is white”, because whiteness, being a part of this immediate judgment, must also be immediately known without any predication. Mulla Mu?ammad Has_h_im ?usaini remarks[85:1] that this reasoning is erroneous. The mind in the act of predicating whiteness of snow is working on a purely ideal existence--the quality of whiteness--and not on an objectively real essence of which the qualities are mere facets or aspects. ?usaini, moreover, antic.i.p.ates Hamilton, and differs from other realists in holding that the so-called unknowable essence of the object is also immediately known. The object, he says, is immediately perceived as one.[85:2] We do not successively perceive the various aspects of what happens to be the objects of our perception.
[84:1] Mu?ammad ibn Mubarak's commentary on ?ikmat al-'Ain, fol. 5a.
[85:1] ?usaini's commentary on ?ikmat al-'Ain, fol. 13a.
[85:2] ?usaini's commentary on ?ikmat al-'Ain, fol. 14b.
(2) The idealist, says the realist, reduces all quality to mere subjective relations. His argument leads him to deny the underlying essence of things, and to look upon them as entirely heterogeneous collections of qualities, the essence of which consists merely in the phenomenal fact of their perception. In spite of his belief in the complete heterogeneity of things, he applies the word existence to all things--a tacit admission that there is some essence common to all the various forms of existence. Abu'l-?asan al-As_h_'ari replies that this application is only a verbal convenience, and is not meant to indicate the so-called internal h.o.m.ogeneity of things. But the universal application of the word existence by the idealist, must mean, according to the realist, that the existence of a thing either const.i.tutes its very essence, or it is something superadded to the underlying essence of the thing. The first supposition is a virtual admission as to the h.o.m.ogeneity of things; since we cannot maintain that existence peculiar to one thing is fundamentally different from existence peculiar to another. The supposition that existence is something superadded to the essence of a thing leads to an absurdity; since in this case the essence will have to be regarded as something distinct from existence; and the denial of essence (with the As_h_'arite) would blot out the distinction between existence and non-existence. Moreover, what was the essence before existence was superadded to it? We must not say that the essence was ready to receive existence before it actually did receive it; since this statement would imply that the essence was non-existence before it received existence. Likewise the statement that the essence has the power of receiving the quality of non-existence, implies the absurdity that it does already exist. Existence, therefore, must be regarded as forming a part of the essence. But if it forms a part of the essence, the latter will have to be regarded as a compound. If, on the other hand, existence is external to the essence, it must be something contingent because of its dependence on something other than itself. Now everything contingent must have a cause. If this cause is the essence itself, it would follow that the essence existed before it existed; since the cause must precede the effect in the fact of existence. If, however, the cause of existence is something other than the essence, it follows that the existence of G.o.d also must be explained by some cause other than the essence of G.o.d--an absurd conclusion which turns the necessary into the contingent.[88:1] This argument of the realist is based on a complete misunderstanding of the idealist position. He does not see that the idealist never regarded the fact of existence as something superadded to the essence of a thing; but always held it to be identical with the essence. The essence, says ibn Mubarak,[88:2] is the cause of existence without being chronologically before it. The existence of the essence const.i.tutes its very being; it is not dependent for it on something other than itself.
[88:1] Ibn Mubarak's Commentary, fol. 8b.
[88:2] Ibn Mubarak's Commentary, fol. 9a.
The truth is that both sides are far from a true theory of knowledge.
The agnostic realist who holds that behind the phenomenal qualities of a thing, there is an essence operating as their cause, is guilty of a glaring contradiction. He holds that underlying the thing there is an _unknowable_ essence or substratum which is _known_ to exist. The As_h_'arite idealist, on the other hand, misunderstands the process of knowledge. He ignores the mental activity involved in the act of knowledge; and looks upon perceptions as mere presentations which are determined, as he says, by G.o.d. But if the order of presentations requires a cause to account for it, why should not that cause be sought in the original const.i.tution of matter as Locke did? Moreover, the theory that knowledge is a mere pa.s.sive perception or awareness of what is presented, leads to certain inadmissible conclusions which the As_h_'arite never thought of:--
(a). They did not see that their purely subjective conception of knowledge swept away all possibility of error. If the existence of a thing is merely the fact of its being presented, there is no reason why it should be cognised as different from what it actually is.
(b). They did not see that on their theory of knowledge, our fellow-beings like other elements of the physical order, would have no higher reality than mere states of my consciousness.
(c). If knowledge is a mere receptivity of presentations, G.o.d who, as cause of presentations, is active in regard to the act of our knowledge, must not be aware of our presentations. From the As_h_'arite point of view this conclusion is fatal to their whole position. They cannot say that presentations on their ceasing to be my presentations, continue to be presentations to G.o.d's consciousness.
Another question connected with the nature of the essence is, whether it is caused or uncaused. The followers of Aristotle, or philosophers as they are generally called by their opponents, hold that the underlying essence of things is uncaused. The As_h_'arite hold the opposite view.
Essence, says the Aristotelian, cannot be acted upon by any external agent.[90:1] Al-Katibi argues that if, for instance, the essence of humanity had resulted from the operation of an external activity, doubt as to its being the real essence of humanity would have been possible.
As a matter of fact we never entertain such a doubt; it follows, therefore, that the essence is not due to the activity of an agency external to itself. The idealist starts with the realist distinction of essence and existence, and argues that the realist line of argument would lead to the absurd proposition--that man is uncaused; since he must be regarded, according to the realist, as a combination of two uncaused essences--existence and humanity.