CHAPTER XII

METAPHYSICS

By "metaphysics" we understand Vico's conception of reality as a

whole, not of the world of man by itself; and we also include in the

meaning of the word his ultimate negative conclusion asserting the

unknowability or the imperfect knowability of one or more spheres of

reality, or of that highest sphere in which the others reunite.

In point of fact, as we observed in considering the second and latest

form of his theory of knowledge, Vico drew a sharp line between the

world of man and the world of nature: the former transparent to man

because created by him, the latter opaque, because only God its

Creator has knowledge of it. And his conception of the total and

ultimate reality, the metaphysic which he expounds together with his

earlier theory of knowledge, retains the value granted to it by that

theory and no other: it is a probable conjecture, but one incapable

of verification, and reaches completion in the certitude of revealed

theology. Hence this metaphysic remains out of all possible connexion

with the New Science, which proceeds by the certain method of truth and

cuts itself off from revelation. Vico never rejected it. He discusses

it in his autobiography of 1725, the year of the first _Scienza Nuova;_

he refers to it with satisfaction in 1737, seven years after the

second _Scienza Nuova,_ when his scientific life was, as he himself

considered, at an end. But though he never rejected it he always kept

it aside, so to speak, in a corner of his mind.

This point established, it might seem that there can be nothing more to

be said of any philosophical importance about Vico's metaphysics. But

this is not the case. Since every department of philosophy implies in

itself every other, and since we can therefore always deduce from the

treatment of one of the so-called particular philosophical sciences the

character of the whole, it is legitimate to examine the New Science

and to consider what metaphysic is implicit therein; to determine what

philosophical complement is logically supported and demanded by this

science.

The New Science, which asserted the full knowability of human affairs,

not merely on the surface, like a psychological treatment, but in

the depths of their nature: the New Science, which transcended the

individual to attain the conception of the mind which informs all

things and is Providence: the Science which with divine pleasure

contemplated the eternal cycle of the mind, elevated as it was to such

a height, necessarily tended to interpret the whole of reality, both

Nature and God, as Mind. That this tendency was objective to the New

Science, and not subjective to Vico, in whose mind the science so to

speak thought itself out, need hardly be repeated. Vico personally not

only did not encourage it but actually curtailed and repressed it so

energetically as to leave no trace of it in his works. There was no

philosophical doctrine of which he had such terror and against which

he so frequently waged war as that of pantheism; and perhaps this

polemical preoccupation is the only trace, though quite an involuntary

trace, visible in his writings of the tendency which he must have

observed in himself. He was, and wished to remain, a Christian and a

Catholic; transcendence, the personality of God, the substantiality

of the soul, though his science did not lead him towards them, were

uncontrollable necessities to his consciousness. But just as this fact

allowed Vico to repress but not to eradicate the essential logical

tendency of his thought, so it enables us to recognise that tendency

in the facts themselves. An Italian critic, Spaventa, is right when he

says that in Vico the necessity of a new metaphysic makes itself felt;

another, a German Catholic, is equally right in denning his system

as "semi-pantheistic." It would perhaps be more dangerous to go on

to say, with the Italian above mentioned, that Vico makes an advance

on the Cartesian idea of two substances and the Spinozistic of two

attributes, and even on the Leibnitian doctrine of the monad, and that

he transcends parallelism and pre-established harmony by distinguishing

the two providences, the two attributes, nature and mind, in such a way

that the one is a step to the other, and by conceiving the point of

union and the origin of the opposition as an unfolding or development,

so that nature is regarded as the phenomenon and proper basis of

mind, the pre-supposition which mind creates to itself in order to be

really mind, to be a true unity. For while we may doubt whether the

distinction of the two attributes or two providences, the natural and

the human, is a well-grounded and inevitable consequence of conceiving

substance as mind and thought, it is impossible to deduce the

evolutionary transition from one to the other as a tendency implicit in

Vico's conception of thought. There is certainly particular documentary

evidence for this latter particular tendency: but it is scanty and

unconvincing, and occurs not in the system of the New Science but

rather in the chronologically earlier system.

For the metaphysic laid down by Vico in the earlier phase of his

thought is not, as it has seemed to some, and as it may at first sight

appear, entirely devoid of significance and value. It shows the same

aversion to materialism and the same love of idealism which inspire

the meditations of the New Science. The philosophy of Epicurus, which

takes as its starting-point matter already formed and divided into

ultimate particles of various shapes, composed of other parts which

are supposed to be indivisible owing to the absence of void between

them, seemed to him a philosophy such as to satisfy the naïve mind of

a child or the uncritical mind of a woman; and the delight with which

he followed the explanation of the forms of material nature according

to this philosopher, in the poem of Lucretius, was equalled by the

amusement and pity with which he watched him forced by stern necessity

to lose himself in countless ineptitudes and follies in trying to

explain the phenomena of thought. Vico accused the Cartesian physics

no less than the Epicurean of a "false position," since it also takes

ready-formed matter as its starting-point, differing from the Epicurean

matter in that, while the latter limits the divisibility of matter at

the atoms, the former makes its elements infinitely divisible; that

the one places motion in the void, the other in the solid; the one

initiates the shaping of its infinite worlds by a casual declination

of atoms from the downward path of their own weight and gravitation,

the other generates its indefinite vortices from an impetus imparted

to a section of inert and therefore not yet divided matter, which on

receiving this motion divides into fragments, and, hampered by its

mass, necessarily makes an effort to move in a straight line, and

being unable to do so through its solidity begins, divided as it is

into fragments, to move about the centre of each fragment. In this way

while Epicurus entrusted the world to chance, Descartes subjected it

to fate; and it was in vain that to save himself from materialism he

superimposed upon his physics a quasi-Platonic metaphysic, by which he

attempted to establish two substances, the one extended and the other

intelligent, and to make room for an immaterial agent; for these two

parts were not reconciled in his system, since his mechanical physics

included in itself a metaphysic like the Epicurean, establishing

one kind and one only of active material substance. For similar

or analogous reasons Vico rejected the philosophies of Gassendi,

Spinoza and Locke; and the physical science of other authors such as

Robert Boyle seemed to him valuable for purposes of medicine and the

"spargiric art," but useless for philosophy. Galileo he considered to

have looked at physical science with the eye of a great geometrician,

but without the aid of the full light of metaphysics. He had sympathy

with philosophers who were also geometricians, and therefore with the

Pythagorean or Timaean physics, according to which the world consists

of numbers; with the Platonic metaphysics, which from the form of our

minds without any other hypothesis establishes, upon our knowledge

and consciousness of certain eternal truths which are in our mind and

cannot be ignored or denied, the eternal idea as the principle of all

things; with the doctrine of metaphysical points, attributed by him

to Zeno the Stoic; and finally with the philosophy of the Italian

Renaissance, the period adorned by Ficino, Pico della Mirandola,

Steuco, Nifo, Mazzoni, Piccolomini, Acquaviva and Patrizio.

The fundamental concept of his cosmology was supplied by the

metaphysical point, in which the employment of mathematics in

metaphysics, a process admitted by Vico as analogous to that of

construction, found expression. Just as from the geometrical point

proceed the line and the surface, and the point which is defined as

having no parts supplies the proof that lines otherwise incommensurable

can be divided equally into their component points, so it is legitimate

to postulate points not geometrical but metaphysical, which though not

extended generate extension. Between God, who is rest, and matter,

which is motion, the intermediate place is taken by the metaphysical

point, whose attribute is conation, the indefinite energy and attempt

on the part of the universe to bring into being and sustain each

particular thing. The existence of matter is nothing but an indefinite

power of keeping the universe extended, which underlies all extended

objects equally however unequal they may be, and also an indefinite

power of motion underlying all particular motions, however unequal.

Behind a grain of sand lies something which when this particle is

divided gives to it and preserves in it an infinite extension and

magnitude; so that the whole mass of the universe is included in the

grain of sand, if not actually, yet potentially and in capacity. This

effort of the universe, underlying each smallest particle of matter,

is neither the extension of the particle nor the extension of the

universe: it is the thought of God, which, free from all materiality,

gives motion and impulse to the whole. Every particular determination

of reality agrees with this fundamental truth. Time is divisible,

eternity indivisible; disturbances of the mind wax and wane, its

quiescence has no degrees; extended things are corruptible, unextended

things permanent in their indivisibility; body can be divided, mind

cannot; possibilities are at a single point, accidents are everywhere;

science is one, while opinion produces differences; virtue is neither

in one place nor another, vice walks up and down in every direction;

the good is one, the bad is innumerable; in every kind of thing in a

word the best occurs in the category of the indivisible.

Substance in general, which underlies and sustains things, is divided

into two species, extended substance or that which equally supports

unequal extensions, and thinking substance which equally supports

unequal thoughts. And just as one part of extension is divided from

another but indivisible in the substance of the body, so one part of

thought, that is to say a determinate thought, is divided from another

but indivisible in the substance of the soul. Activity or freedom is

peculiar to the soul, and entirely denied to body: and Descartes, in

making a conation of body the beginning of his physics, was strictly

adopting the methods of a poet and falling into the anthropomorphic

conceptions of primitive races. The phenomena which students of

mechanics call activities, forms, or powers, are insensible movements

by which bodies move either, as the ancients said, towards their

centres of gravity, or, as the modern theory of mechanics asserts, away

from their centre of motion. The communication of motion, moreover,

is just as inconceivable in body as is activity. To grant it would be

equivalent to granting the interpenetration of bodies, since motion

is nothing but matter in motion; the blow given to a ball is only the

occasion for the energy of the universe, which was so weak in the ball

as to make it seem at rest, to expand and thus to give it an appearance

of more sensible motion. On the other hand, Vico agreed with the

Cartesians, especially Malebranche, as to the origin of ideas, which

he inclined to believe that God creates in us from time to time. He

also held with the Cartesians that the lower animals are automata;

and he agreed with all contemporary thought as to the subjectivity of

secondary qualities.

Setting aside these last doctrines, which are not Vico's own, indeed

he scarcely refers to them, the fundamental doctrine of metaphysical

points is all his own. His attribution of it to an imaginary Zeno,

in whose person were combined and confused the Eleatic and the Stoic

(a mistake common in the philosophical literature of the time), can

deceive nobody, and did not even deceive Vico himself, who when pressed

explained how he had been led to that interpretation of Aristotle's

statements about Zeno, and finally says that if the doctrine cannot

be accepted as that of Zeno, he will adopt it as his own, without

the patronage of any great names. Nor on the other hand can it be

traced to the Leibnitian monadology. We cannot be sure that Vico

was acquainted with this doctrine. In any case he does not mention

it, while Leibniz he does mention in terms of deep respect: and the

resemblance is very vague, for the metaphysical points are not monads.

The discovery by Leibniz and Newton of the differential calculus may

however be said to have influenced him. It was then for the first time

becoming known in Italy; and its terminology of maximum infinities,

greater and less infinities, and so on would, says Vico, completely

baffle the human understanding, since the infinite admits neither of

degrees nor of multiplication, but for the help of a metaphysic which

shows that all actual extension and actual movement is a power or

capacity for extension and motion always equal to itself and infinite.

The contributions of Platonic lines of thought (the Platonism of the

Renaissance) and those of Galileo, especially the latter, to Vico's

conception have been worked out with even more justice: his originality

however is in no degree impaired by these facts.

The idea in which his originality found expression was, no doubt,

fantastic and arbitrary, and in consequence bound to remain undeveloped

and without influence on Vico's other conceptions. To the reviewer

in the _Giornale dei letterati,_ who called this metaphysic a mere

sketch, the author replied that it was quite complete: an abortion in

fact, rather than a sketch, and, as such, complete. And in the _Scienza

Nuova,_ beside a few references to the refusal to attribute activity to

matter, there is one fugitive but interesting attempt at a connexion

with a geometrical or arithmetical metaphysic on the model of that

described above. In this passage it is stated that upon the order of

material and complex civil affairs the order of numbers, which are

abstract and absolutely simple, is imposed: and the fact is noted that

governments begin with the one, in domestic monarchy, pass to the few

in aristocracy, advance to the many and the all in popular republics,

and finally return to the one in civil monarchies, so that humanity

moves perpetually from the one to the one, from domestic monarchy to

civil monarchy.

But if we can and must deny all value to Vico's cosmology, if the

contradictions and obscurities in which he involves himself are

manifest, and were observed by critics of his own time, still we cannot

deny its dynamic nature as opposed to the mechanicism of contemporary

philosophy. The theory of metaphysical points, in which God appears as

the great geometrician who creates by knowing and knows by creating the

realities of the universe, is as it were a symbol of the necessity of

interpreting nature in idealistic language. We find here and there a

theologian Vico, an agnostic Vico, or even a fanciful Vico composing

cosmological and physical romances: but look where we will among his

works, we shall never find a materialistic Vico.

Even this by no means overbold metaphysic aroused suspicions of

pantheism, though the author insisted upon the theological doctrine

that God's activity is convertible _ab intra_ with the thing created

and _ab extra_ with the fact, and that therefore the world was created

in time; that the human soul, which as a mirror of the divine thinks

infinity and eternity, is not bounded by the body and therefore not

by time, and is therefore immortal; and that man, even if God were to

reveal it to him, cannot understand how the infinite enters into finite

objects. However, he thought it necessary to conclude his replies to

his critics by collecting statements demonstrating his orthodoxy, and

clinching the matter with the remark that "since God is in one sense

substance and in another His creatures, and since the _ratio essendi_

or essence is proper to substance, the created substances even as

regards their essence are diverse and distinct from the substance of

God."

Vico's thought was limited by the idea of transcendence, which

prevented him from attaining not only the unity of reality, but also

a truly complete knowledge of that world of man which he had so

powerfully explained by means of the opposite principle. We now see why

Vico, though he did not deny the fact of progress, could have no real

conception of it. It has been observed that the conception of progress

is foreign to Catholicism and dates from the Protestant Reformation,

and that therefore the Catholic Vico was bound to deny himself the

use of it. But the conception of an immanent providence is no less

irreconcilable with Catholicism, and yet Vico is saturated with this

idea. This means that he did not lack the impulse: rather he was unable

to pass a certain point beyond which his faith would have been too

obviously defeated. Progress, deduced from the immanent providence and

introduced into the New Science, would have accentuated the difference

within the uniformity, the origin at every moment of something new,

the perpetual enrichment of the flux at every reflux: it would have

changed history from an orderly traversing and retraversing of the line

drawn by God under the eye of God to a drama whose _ratio essendi_ is

contained within itself: it would have enmeshed and drawn with it the

whole universe and realised the thought of infinite worlds. In face

of this vision Vico paused in apprehension and stubbornly refused to

proceed: the philosopher in him had yielded to the Catholic.

The Philosophy of Giambattista Vico · 第 12 / 21 章