The Greek Philosophers, Vol. 2 (of 2)

by Alfred William Benn

In estimating the intellectual character of Plotinus, we must also remember that the theory of the absolute One occupies a relatively small place in his speculations; while, at a rough computation, the purely mystical portions of his writings—by which we understand those in which allusion is made to personal and incommunicable experiences of his own—do not amount to more than one per cent. of the whole. If these have attracted more attention than all the rest put together, the reason probably is that they offer an agreeable relief to the arid scholasticism which fills so much of the Enneads, and that they are the only very original contribution made by Plotinus to Greek literature. But the significance of a writer must not always be measured by his most original passages, and this is eminently true of our philosopher. His great merit was to make the spiritualism of Plato and Aristotle more intelligible and interesting than it had been before, and to furnish reason with a rallying-point when it was threatened with utter destruction by the religious revival of the empire.

VII.

So far our investigation has been analytical. We have seen Plotinus acquire, one after another, the elements out of which his system has still to be constructed. The first step was to separate spirit from matter. They are respectively distinguished as principles of union and of division. The bodies given to us in experience are a combination of the two, a dispersion of form over an infinitely extended, infinitely divisible, infinitely changeful substratum. Our own souls, which at first seemed so absolutely self-identical, present, on examination, a similarly composite character. A fresh analysis results in the separation of Nous or Reason from the lower functions of conscious life. And we infer by analogy that the soul in Nature bears the same relation to a transcendent objective Nous. Nous is essentially pure self-consciousness, and from this self-consciousness the world of Ideas is developed. Properly speaking, Ideas are the sole reality: sensible forms are an image of them impressed on matter through the agency of the world-soul. But Nous, or the totality of Ideas, though high, is not the highest. All that has hitherto occupied us, Nature, Soul, and Reason, is pervaded by a fundamental unity, without which nothing could exist. But Soul is not herself this unity, nor is Reason. Self-consciousness, even in its purest expression, involves a duality of object and subject. The notion of Being is distinct from the notion of oneness. The principle represented by the latter, as the cause of all things, must itself transcend existence. At the same time, it is revealed to us by the fact of our own personal identity. To be united with oneself is to be united with the One.

Thus we have, in all, five gradations: the One, Nous, Soul, the sensible world, and, lastly, unformed Matter. Taken together, the first three constitute a triad of spiritual principles, and, as such, are associated in a single group by Plotinus.[467] Sometimes they are spoken of as the Alexandrian Trinity. But the implied comparison with the Trinity of Catholicism is misleading. With Neo-Platonism, the supreme unity is, properly speaking, alone God and alone One. Nous is vastly inferior to the first principle, and Soul, again, to Nous. Possibly the second and third principles are personal; the first most certainly is not, since self-consciousness is expressly denied to it by Plotinus. Nor is it likely that the idea of a supernatural triad was suggested to Neo-Platonism by Christianity. Each of the three principles may be traced to its source in Greek philosophy. This has been already shown in the case of the One and of the Nous. The universal soul is to be found in Plato’s Timaeus; it is analogous, at least in its lower, divided part, to Aristotle’s Nature; and it is nearly identical with the informing spirit of Stoicism. As to the number three, it was held in high esteem long before the Christian era, and was likely to be independently employed for the construction of different systems at a time when belief in the magical virtue of particular numbers was more widely diffused than at any former period of civilised history.

From another point of view, as we have already observed with Kirchner, the fundamental triad assumed by Plotinus is body, soul, and spirit. Under their objective aspect of the sensible universe, the world-soul, and the Nous, these three principles constitute the sum of all reality. Take away plurality from Nous and there remains the One. Take away soul from body and there remains unformed matter. These are the two transcendent principles between which the others extend, and by whose combination in various proportions they are explained. It is true that Plotinus himself does not allude to the possibility of such an analysis, but it exhibits, better than any other, the natural order of his dialectic.

Plotinus passes by an almost insensible transition from the more elementary and analytical to the more constructive portion of his philosophy. This naturally falls into two great divisions, the one speculative and the other practical. It has to be shown by what necessity and in what order the great cosmic principles are evolved from their supreme source; and it has also to be shown in what way this knowledge is connected with the supreme interests of the human soul. The moral aspect of Neo-Platonism is not at first very clearly distinguished from its metaphysical aspect; and both find their most general solution in the same line of thought that has led us up to a contemplation of the ultimate One. For the successive gradations of our ascent represent, in an inverted order, the steps of creative energy by which all things are evolved from their primal source; while they directly correspond to the process of purification through which every soul must pass in returning from the exile of her separate and material existence to the happiness of identification with God. And here we at once come on the fundamental contradiction of the system. What we were so carefully taught to consider as one and nothing more, must now be conceived as the first cause and the supreme good. Plotinus does, indeed, try to evade the difficulty by saying that his absolute is only a cause in relation to other things, that it is not so much good as the giver of good, that it is only one in the sense of not being many.[468] But after making these reservations, he continues to use the old terms as confidently as if they stood for the ideas usually associated with them. His fundamental error was to identify three distinct methods of connecting phenomena, in thought, with each other or with ourselves. We may view things in relation to their generating antecedents, in relation to other things with which they are associated by resemblance or juxtaposition, or in relation to the satisfaction of our own wants. These three modes of reference correspond to Aristotle’s efficient, formal, and final causes; but the word causation should be applied only to the first. Whether their unfortunate confusion both by Aristotle and by his successors was in any appreciable degree due to their having been associated by him under a common denomination, may reasonably be doubted. It is rather more probable that the same name was given to these different conceptions in consequence of their having first become partially identified in thought. Social arrangements, which have a great deal to do with primitive speculation, would naturally lead to such an identification. The king or other chief magistrate stands at the head of the social hierarchy and forms the bond of union among its members; he is the source of all authority; and his position, or, failing that, his favour, is regarded as the supreme good. Religion extends the same combination of attributes to her chief God; and philosophy, following on the lines of religion, employs it to unify the methods of science and morality.

All existence, according to Plotinus, proceeds from the One, which he also calls God. But God does not create the world by a conscious exercise of power; for, as we have seen, every form of consciousness is excluded from his definition. Neither does it proceed from him by emanation, for this would imply a diminution of his substance.[469] It is produced by an overflow of his infinite power.[470] Our philosopher tries to explain and defend this rather unintelligible mode of derivation by the analogy of physical substances and their actions. Light is constantly coming from the sun without any loss to the luminary itself.[471] And all things are, in like manner, constantly communicating their proper virtue to others while remaining unaltered themselves. Here we have a good example of the close connexion between science and abstract speculation. People often talk as if metaphysics was something beyond the reach of verification. But some metaphysical theories admit, at any rate, of disproof, in so far as they are founded on false physical theories. Had Plotinus known that neither the sun nor anything else in Nature can produce force out of nothing, he would, very probably, have hesitated to credit the One with such a power.

In reasoning up from the world to its first cause, we were given to understand that the two were related to one another as contradictory opposites. The multiple must proceed from the simple, and existence from that which does not exist. But the analogies of material production now suggest a somewhat different view. What every power calls into existence is an image of itself, but the effect is never more than a weakened and imperfect copy of its original. Thus the universe appears as a series of diminishing energies descending in a graduated scale from the highest to the lowest. Here, again, bad science makes bad philosophy. Effects are never inferior to their causes, but always exactly equal, the effect being nothing else than the cause in another place or under another form. This would be obvious enough, did not superficial observation habitually confound the real cause with the sum of its concomitants. What we are accustomed to think of as a single cause is, in truth, a whole bundle of causes, which do not always converge to a single point, and each of which, taken singly, is, of course, inferior to the whole sum taken together. Thus when we say that the sun heats the earth, this is only a conventional way of speaking. What really does the work is a relatively infinitesimal part of the solar heat separately transmitted to us through space. Once neglect this truth, and there is no reason why effects should not exceed as well as fall short of their causes in any assignable proportion. Such an illusion is, in fact, produced when different energies converge to a point. Here it is the consequent and not the antecedent which is confounded with the sum of its concomitants, as when an explosion is said to be the effect of a spark.

Of course we are speaking of causation as exercised under the conditions of time, space, matter, and motion. It is then identical with the transmission of energy and obeys the laws of energy. And to talk about causation under any other conditions than these is utter nonsense. But Plotinus and other philosophers exclude the most essential of the conditions specified from their enquiries into the ultimate origin of things. We are expressly informed that the genesis of Nous from the One, and of Soul from Nous, must not be conceived as taking place in time but in eternity.[472] Unfortunately those who make such reservations are not consistent. They continue to talk about power, causation, priority, and so forth, as if these conceptions were separable from time. Hence they have to choose between making statements which are absolutely unintelligible and making statements which are absolutely untrue.

Perhaps the processes of logic and mathematics may be adduced as an exception. It may be contended that the genus is prior to the species, the premise to the conclusion, the unit to the multiple, the line to the figure, in reason though not in time. And Plotinus avails himself to the fullest extent of mathematical and logical analogies in his transcendental constructions. His One is the starting-point of numeration, the centre of a circle, the identity involved in difference; and under each relation it claims an absolute priority, of which causal power is only the most general expression. We have already seen how a multitude of archetypal Ideas spring from the supreme Nous as from their fountain-head. Their production is explained, on the lines of Plato’s Sophist, as a process of dialectical derivation. By logically analysing the conception of self-consciousness, we obtain, first of all, Nous itself, or Reason, as the subject, and Existence as the object of thought. Subject and object, considered as the same with one another, give us Identity; considered as distinct, they give us Difference. The passage from one to the other gives Motion; the limitation of thought to itself gives Rest. The plurality of determinations so obtained gives number and quantity, their specific difference gives quality, and from these principles everything else is derived.[473] It might seem as if, here at least, we had something which could be called a process of eternal generation—a causal order independent of time. But, in reality, the assumed sequence exists only in our minds, and there it takes place under the form of time, not less inevitably than do the external re-arrangements of matter and motion. Thus in logic and mathematics, such terms as priority, antecedence, and evolution can only be used to signify the order in which our knowledge is acquired; they do not answer to causal relations existing among things in themselves. And apart from these two orders—the objective order of dynamical production in space and time, and the subjective order of intelligibility in thought—there is no kind of succession that we can conceive. Eternal relations, if they exist at all, must be relations of co-existence, of resemblance, or of difference, continued through infinite time. Wherever there is antecedence, the consequent can only have existed for a finite time.