XIII

But with this, it cannot be denied, the Western physics is drawing near to the limit of its possibilities. At bottom, its mission as a historical phenomenon has been to transform the Faustian Nature-feeling into an intellectual knowledge, the faith-forms of springtime into the machine-forms of exact science. And, though for the time being it will continue to quarry more and more practical and even “purely theoretical” results, results as such, whatever their kind, belong to the superficial history of a science. To its deeps belong only the history of its symbolism and its style, and it is almost too evident to be worth the saying that in those deeps the essence and nucleus of our science is in rapid disintegration. Up to the end of the 19th Century every step was in the direction of an inward fulfilment, an increasing purity, rigour and fullness of the dynamic Nature-picture—and then, that which has brought it to an optimum of theoretical clarity, suddenly becomes a solvent. This is not happening intentionally—the high intelligences of modern physics are, in fact, unconscious that it is happening at all—but from an inherent historic necessity. Just so, at the same relative stage, the Classical science inwardly fulfilled itself about 200 B.C. Analysis reached its goal with Gauss, Cauchy and Riemann, and to-day it is only filling up the gaps in its structure.

This is the origin of the sudden and annihilating doubt that has arisen about things that even yesterday were the unchallenged foundation of physical theory, about the meaning of the energy-principle, the concepts of mass, space, absolute time, and causality-laws generally. This doubt is no longer the fruitful doubt of the Baroque, which brought the knower and the object of his knowledge together; it is a doubt affecting the very possibility of a Nature-science. To take one instance alone, what a depth of unconscious Skepsis there is in the rapidly-increasing use of enumerative and statistical methods, which aim only at probability of results and forgo in advance the absolute scientific exactitude that was a creed to the hopeful earlier generations.

The moment is at hand now, when the possibility of a self-contained and self-consistent mechanics will be given up for good. Every physics, as I have shown, must break down over the motion-problem, in which the living person of the knower methodically intrudes into the inorganic form-world of the known. But to-day, not only is this dilemma still inherent in all the newest theories but three centuries of intellectual work have brought it so sharply to focus that there is no possibility more of ignoring it. The theory of gravitation, which since Newton has been an impregnable truth, has now been recognized as a temporally limited and shaky hypothesis. The principle of the Conservation of Energy has no meaning if energy is supposed to be infinite in an infinite space. The acceptance of the principle is incompatible with any three-dimensional structure of space, whether infinite or Euclidean or (as the Non-Euclidean geometries present it) spherical and of “finite, yet unbounded” volume. Its validity therefore is restricted to “a system of bodies self-contained and not externally influenced” and such a limitation does not and cannot exist in actuality. But symbolic infinity was just what the Faustian world-feeling had meant to express in this basic idea, which was simply the mechanical and extensional re-ideation of the idea of immortality and world-soul. In fact it was a feeling out of which knowledge could never succeed in forming a pure system. The luminiferous æther, again, was an ideal postulate of modern dynamics whereby every motion required a something-to-be-moved, but every conceivable hypothesis concerning the constitution of this æther has broken down under inner contradictions; more, Lord Kelvin has proved mathematically that there can be no structure of this light-transmitter that is not open to objections. As, according to the interpretation of Fresnel’s experiments, the light-waves are transversal, the æther would have to be a rigid body (with truly quaint properties), but then the laws of elasticity would have to apply to it and in that case the waves would be longitudinal. The Maxwell-Hertz equations of the Electro-magnetic Theory of Light, which in fact are pure nameless numbers of indubitable validity, exclude the explanation of the æther by any mechanics whatsoever. Therefore, and having regard also to the consequences of the Relativity theory, physicists now regard the æther as pure vacuum. But that, after all, is not very different from demolishing the dynamic picture itself.

Since Newton, the assumption of constant mass—the counterpart of constant force—has had uncontested validity. But the Quantum theory of Planck, and the conclusions of Niels Bohr therefrom as to the fine structure of atoms, which experimental experience had rendered necessary, have destroyed this assumption. Every self-contained system possesses, besides kinetic energy, an energy of radiant heat which is inseparable from it and therefore cannot be represented purely by the concept of mass. For if mass is defined by living energy it is ipso facto no longer constant with reference to thermodynamic state. Nevertheless, it is impossible to fit the theory of quanta into the group of hypotheses constituting the “classical” mechanics of the Baroque; moreover, along with the principle of causal continuity, the basis of the Infinitesimal Calculus founded by Newton and Leibniz is threatened. But, if these are serious enough doubts, the ruthlessly cynical hypothesis of the Relativity theory strikes to the very heart of dynamics. Supported by the experiments of A. A. Michelson, which showed that the velocity of light remains unaffected by the motion of the medium, and prepared mathematically by Lorentz and Minkowski, its specific tendency is to destroy the notion of absolute time. Astronomical discoveries (and here present-day scientists are seriously deceiving themselves) can neither establish nor refute it. “Correct” and “incorrect” are not the criteria whereby such assumptions are to be tested; the question is whether, in the chaos of involved and artificial ideas that has been produced by the innumerable hypotheses of Radioactivity and Thermodynamics, it can hold its own as a useable hypothesis or not. But however this may be, it has abolished the constancy of those physical quantities into the definition of which time has entered, and unlike the antique statics, the Western dynamics knows only such quantities. Absolute measures of length and rigid bodies are no more. And with this the possibility of absolute quantitative delimitations and therefore the “classical” concept of mass as the constant ratio between force and acceleration fall to the ground—just after the quantum of action, a product of energy and time, had been set up as a new constant.

If we make it clear to ourselves that the atomic ideas of Rutherford and Bohr signify nothing but this, that the numerical results of observations have suddenly been provided with a picture of a planetary world within the atom, instead of that of atom-swarms hitherto favoured; if we observe how rapidly card-houses of hypothesis are run up nowadays, every contradiction being immediately covered up by a new hurried hypothesis; if we reflect on how little heed is paid to the fact that these images contradict one another and the “classical” Baroque mechanics alike, we cannot but realize that the great style of ideation is at an end and that, as in architecture and the arts of form, a sort of craft-art of hypothesis-building has taken its place. Only our extreme maestria in experimental technique—true child of its century—hides the collapse of the symbolism.

XIV

Amongst these symbols of decline, the most conspicuous is the notion of Entropy, which forms the subject of the Second Law of Thermodynamics. The first law, that of the conservation of energy, is the plain formulation of the essence of dynamics—not to say of the constitution of the West-European soul, to which Nature is necessarily visible only in the form of a contrapuntal-dynamic causality (as against the static-plastic causality of Aristotle). The basic element of the Faustian world-picture is not the Attitude but the Deed and, mechanically considered, the Process, and this law merely puts the mathematical character of these processes into form as variables and constants. But the Second Law goes deeper, and shows a bias in Nature-happenings which is in no wise imposed a priori by the conceptual fundamentals of dynamics.

Mathematically, Entropy is represented by a quantity which is fixed by the momentary state of a self-contained system of bodies and under all physical and chemical alterations can only increase, never diminish; in the most favourable conditions it remains unchanged. Entropy, like Force and Will, is something which (to anyone for whom this form-world is accessible at all) is inwardly clear and meaningful, but is formulated differently by every different authority and never satisfactorily by any. Here again, the intellect breaks down where the world-feeling demands expression.

Nature-processes in general have been classified as irreversible and reversible, according as entropy is increased or not. In any process of the first kind, free energy is converted into bound energy, and if this dead energy is to be turned once more into living, this can only occur through the simultaneous binding of a further quantum of living energy in some second process; the best-known example is the combustion of coal—that is, the conversion of the living energy stored up in it into heat bound by the gas form of the carbon dioxide, if the latent energy of water is to be translated into steam-pressure and thereafter into motion. It follows that in the world as a whole entropy continually increases; that is, the dynamic system is manifestly approaching to some final state, whatever this may be. Examples of the irreversible processes are conduction of heat, diffusion, friction, emission of light and chemical reactions; of reversible, gravitation, electric oscillations, electromagnetic waves and sound-waves.

What has never hitherto been fully felt, and what leads me to regard the Entropy theory (1850) as the beginning of the destruction of that masterpiece of Western intelligence, the old dynamic physics, is the deep opposition of theory and actuality which is here for the first time introduced into theory itself. The First Law had drawn the strict picture of a causal Nature-happening, but the Second Law by introducing irreversibility has for the first time brought into the mechanical-logical domain a tendency belonging to immediate life and thus in fundamental contradiction with the very essence of that domain.

If the Entropy theory is followed out to its conclusion, it results, firstly, that in theory all processes must be reversible—which is one of the basic postulates of dynamics and is reasserted with all rigour in the law of the Conservation of Energy—but, secondly, that in actuality processes of Nature in their entirety are irreversible. Not even under the artificial conditions of laboratory experiment can the simplest process be exactly reversed, that is, a state once passed cannot be re-established. Nothing is more significant of the present condition of systematics than the introduction of the hypotheses of “elementary disorder” for the purpose of smoothing-out the contradiction between intellectual postulate and actual experience. The “smallest particles” of a body (an image, no more) throughout perform reversible processes, but in actual things the smallest particles are in disorder and mutually interfere; and so the irreversible process that alone is experienced by the observer is linked with increase of entropy by taking the mean probabilities of occurrences. And thus theory becomes a chapter of the Calculus of Probabilities, and in lieu of exact we have statistical methods.

Evidently, the significance of this has passed unnoticed. Statistics belong, like chronology, to the domain of the organic, to fluctuating Life, to Destiny and Incident and not to the world of laws and timeless causality. As everyone knows, statistics serve above all to characterize political and economic, that is, historical, developments. In the “classical” mechanics of Galileo and Newton there would have been no room for them. And if, now, suddenly the contents of that field are supposed to be understood and understandable only statistically and under the aspect of Probability—instead of under that of the a priori exactitude which the Baroque thinkers unanimously demanded—what does it mean? It means that the object of understanding is ourselves. The Nature “known” in this wise is the Nature that we know by way of living experience, that we live in ourselves. What theory asserts (and, being itself, must assert)—to wit, this ideal irreversibility that never happens in actuality—represents a relic of the old severe intellectual form, the great Baroque tradition that had contrapuntal music for twin sister. But the resort to statistics shows that the force that that tradition regulated and made effective is exhausted. Becoming and Become, Destiny and Causality, historical and natural-science elements are beginning to be confused. Formulæ of life, growth, age, direction and death are crowding up.

That is what, from this point of view, irreversibility in world-processes has to mean. It is the expression, no longer of the physical “t” but of genuine historical, inwardly-experienced Time, which is identical with Destiny.

Baroque physics was, root and branch, a strict systematic and remained so for as long as its structure was not racked by theories like these, as long as its field was absolutely free from anything that expressed accident and mere probability. But directly these theories come up, it becomes physiognomic. “The course of the world” is followed out. The idea of the end of the world appears, under the veil of formulæ that are no longer in their essence formulæ at all. Something Goethian has entered into physics—and if we understand the deeper significance of Goethe’s passionate polemic against Newton in the “Farbenlehre” we shall realize the full weight of what this means. For therein intuitive vision was arguing against reason, life against death, creative image against normative law. The critical form-world of Nature-knowledge came out of Nature-feeling, God-feeling, as the evoked contrary. Here, at the end of the Late period, it has reached the maximal distance and is turning to come home.

So, once more, the imaging-power that is the efficient in dynamics conjures up the old great symbol of Faustian man’s historical passion, Care—the outlook into the farthest far of past and future, the back-looking study of history, the foreseeing state, the confessions and introspections, the bells that sounded over all our country-sides and measured the passing of Life. The ethos of the word Time, as we alone feel it, as instrumental music alone and no statue-plastic can carry it, is directed upon an aim. This aim has been figured in every life-image that the West has conceived—as the Third Kingdom, as the New Age, as the task of mankind, as the issue of evolution. And it is figured, as the destined end-state of all Faustian “Nature,” in Entropy.

Directional feeling, a relation of past and future, is implicit already in the mythic concept of force on which the whole of this dogmatic form-world rests, and in the description of natural processes it emerges distinct. It would not be too much, therefore, to say that entropy, as the intellectual form in which the infinite sum of nature-events is assembled as a historical and physiognomic unit, tacitly underlay all physical concept-formation from the outset, so that when it came out (as one day it was bound to come out) it was as a “discovery” of scientific induction claiming “support” from all the other theoretical elements of the system. The more dynamics exhausts its inner possibilities as it nears the goal, the more decidedly the historical characters in the picture come to the front and the more insistently the organic necessity of Destiny asserts itself side by side with the inorganic necessity of Causality, and Direction makes itself felt along with capacity and intensity, the factors of pure extension. The course of this process is marked by the appearance of whole series of daring hypotheses, all of like sort, which are only apparently demanded by experimental results and which in fact world-feeling and mythology imagined as long ago as the Gothic age.

Above all, this is manifested in the bizarre hypotheses of atomic disintegration which elucidate the phenomena of radioactivity, and according to which uranium atoms that have kept their essence unaltered, in spite of all external influences, for millions of years and then suddenly without assignable cause explode, scattering their smallest particles over space with velocities of thousands of kilometres per second. Only a few individuals in an aggregate of radioactive atoms are struck by Destiny thus, the neighbours being entirely unaffected. Here too, then, is a picture of history and not “Nature,” and although statistical methods here also prove to be necessary, one might almost say that in them mathematical number has been replaced by chronological.

With ideas like these, the mythopoetic force of the Faustian soul is returning to its origins. It was at the outset of the Gothic, just at the time when the first mechanical clocks were being built, that the myth of the world’s end, Ragnarök, the Twilight of the Gods, arose. It may be that, like all the reputedly old-German myths Ragnarök (whether in the Völuspa form or as the Christian Muspilli) was modelled more or less on Classical and particularly Christian-Apocalyptic motives. Nevertheless, it is the expression and symbol of the Faustian and of no other soul. The Olympian college is historyless, it knows no becoming, no epochal moments, no aim. But the passionate thrust into distance is Faustian. Force, Will, has an aim, and where there is an aim there is for the inquiring eye an end. That which the perspective of oil-painting expressed by means of the vanishing point, the Baroque park by its point de vue, and analysis by the nth term of an infinite series—the conclusion, that is, of a willed directedness—assumes here the form of the concept. The Faust of the Second Part is dying, for he has reached his goal. What the myth of Götterdämmerung signified of old, the irreligious form of it, the theory of Entropy, signifies to-day—world’s end as completion of an inwardly necessary evolution.

XV

It remains now to sketch the last stage of Western science. From our standpoint of to-day, the gently-sloping route of decline is clearly visible.

This too, the power of looking ahead to inevitable Destiny, is part of the historical capacity that is the peculiar endowment of the Faustian. The Classical died, as we shall die, but it died unknowing. It believed in an eternal Being and to the last it lived its days with frank satisfaction, each day spent as a gift of the gods. But we know our history. Before us there stands a last spiritual crisis that will involve all Europe and America. What its course will be, Late Hellenism tells us. The tyranny of the Reason—of which we are not conscious, for we are ourselves its apex—is in every Culture an epoch between man and old-man, and no more. Its most distinct expression is the cult of exact sciences, of dialectic, of demonstration, of causality. Of old the Ionic, and in our case the Baroque were its rising limb, and now the question is what form will the down-curve assume?

In this very century, I prophesy, the century of scientific-critical Alexandrianism, of the great harvests, of the final formulations, a new element of inwardness will arise to overthrow the will-to-victory of science. Exact science must presently fall upon its own keen sword. First, in the 18th Century, its methods were tried out, then, in the 19th, its powers, and now its historical rôle is critically reviewed. But from Skepsis there is a path to “second religiousness,” which is the sequel and not the preface of the Culture. Men dispense with proof, desire only to believe and not to dissect.

The individual renounces by laying aside books. The Culture renounces by ceasing to manifest itself in high scientific intellects. But science exists only in the living thought of great savant-generations, and books are nothing if they are not living and effective in men worthy of them. Scientific results are merely items of an intellectual tradition. It constitutes the death of a science that no one any longer regards it as an event, and an orgy of two centuries of exact scientific-ness brings satiety. Not the individual, the soul of the Culture itself has had enough, and it expresses this by putting into the field of the day ever smaller, narrower and more unfruitful investigators. The great century of the Classical science was the third, after the death of Aristotle; when Archimedes died and the Romans came, it was already almost at its end. Our great century has been the 19th. Savants of the calibre of Gauss and Humboldt and Helmholtz were already no more by 1900. In physics as in chemistry, in biology as in mathematics, the great masters are dead, and we are now experiencing the decrescendo of brilliant gleaners who arrange, collect and finish-off like the Alexandrian scholars of the Roman age. Everything that does not belong to the matter-of-fact side of life—to politics, technics or economics—exhibits the common symptom. After Lysippus no great sculptor, no artist as man-of-destiny, appears, and after the Impressionists no painter, and after Wagner no musician. The age of Cæsarism needed neither art nor philosophy. To Eratosthenes and Archimedes, true creators, succeed Posidonius and Pliny, collectors of taste, and finally Ptolemy and Galen, mere copyists. And, just as oil-painting and instrumental music ran through their possibilities in a few centuries, so also dynamics, which began to bud about 1600, is to-day in the grip of decay.

But before the curtain falls, there is one more task for the historical Faustian spirit, a task not yet specified, hitherto not even imagined as possible. There has still to be written a morphology of the exact sciences, which shall discover how all laws, concepts and theories inwardly hang together as forms and what they have meant as such in the life-course of the Faustian Culture. The re-treatment of theoretical physics, of chemistry, of mathematics as a sum of symbols—this will be the definitive conquest of the mechanical world-aspect by an intuitive, once more religious, world-outlook, a last master-effort of physiognomic to break down even systematic and to absorb it, as expression and symbol, into its own domain. One day we shall no longer ask, as the 19th Century asked, what are the valid laws underlying chemical affinity or diamagnetism—rather, we shall be amazed indeed that minds of the first order could ever have been completely preoccupied by questions such as these. We shall inquire whence came these forms that were prescribed for the Faustian spirit, why they had to come to our kind of humanity particularly and exclusively, and what deep meaning there is in the fact that the numbers that we have won became phenomenal in just this picture-like disguise. And, be it said, we have to-day hardly yet an inkling of how much in our reputedly objective values and experiences is only disguise, only image and expression.

The separate sciences—epistemology, physics, chemistry, mathematics, astronomy—are approaching one another with acceleration, converging towards a complete identity of results. The issue will be a fusion of the form-worlds, which will present on the one hand a system of numbers, functional in nature and reduced to a few ground-formulæ, and on the other a small group of theories, denominators to those numerators, which in the end will be seen to be myths of the springtime under modern veils, reducible therefore—and at once of necessity reduced—to picturable and physiognomically significant characters that are the fundamentals. This convergence has not yet been observed, for the reason that since Kant—indeed, since Leibniz—there has been no philosopher who commanded the problems of all the exact sciences.

Even a century ago, physics and chemistry were foreign to one another, but to-day they cannot be handled separately—witness spectrum analysis, radioactivity, radiation of heat. Fifty years ago the essence of chemistry could still be described almost without mathematics, and to-day the chemical elements are in course of volatilizing themselves into the mathematical constants of variable relation-complexes, and with the sense-comprehensibility of the elements goes the last trace of magnitude as the term is Classically and plastically understood. Physiology is becoming a chapter of organic chemistry and is making use of the methods of the Infinitesimal Calculus. The branch of the older physics—distinguished, according to the bodily senses concerned in each, as acoustics, optics and heat—have melted into a dynamic of matter and a dynamic of the æther, and these again can no longer keep their frontiers mathematically clear. The last discussions of epistemology are now uniting with those of higher analysis and theoretical physics to occupy an almost inaccessible domain, the domain to which, for example, the theory of Relativity belongs or ought to belong. The sign-language in which the emanation-theory of radioactivity expresses itself is completely de-sensualized.

Chemistry, once concerned with defining as sharply as possible the qualities of elements, such as valency, weight, affinity and reactivity, is setting to work to get rid of these sensible traits. The elements are held to differ in character according to their derivation from this or that compound. They are represented to be complexes of different units which indeed behave (“actually”) as units of a higher order and are not practically separable but show deep differences in point of radioactivity. Through the emanation of radiant energy degradation is always going on, so that we can speak of the lifetime of an element, in formal contradiction with the original concept of the element and the spirit of modern chemistry as created by Lavoisier. All these tendencies are bringing the ideas of chemistry very close to the theory of Entropy, with its suggestive opposition of causality and destiny, Nature and History. And they indicate the paths that our science is pursuing—on the one hand, towards the discovery that its logical and numerical results are identical with the structure of the reason itself, and, on the other, towards the revelation that the whole theory which clothes these numbers merely represents the symbolic expression of Faustian life.

And here, as our study draws to its conclusion, we must mention the truly Faustian theory of “aggregates,” one of the weightiest in all this form-world of our science. In sharpest antithesis to the older mathematic, it deals, not with singular quantities but with the aggregates constituted by all quantities [or objects] having this or that specified morphological similarity—for instance all square numbers or all differential equations of a given type. Such an aggregate it conceives as a new unit, a new number of higher order, and subjecting it to criteria of new and hitherto quite unsuspected kinds such as “potency,” “order,” “equivalence,” “countableness,” and devising laws and operative methods for it in respect of these criteria. Thus is being actualized a last extension of the function-theory. Little by little this absorbed the whole of our mathematic, and now it is dealing with variables by the principles of the Theory of Groups in respect of the character of the function and by those of the Theory of Aggregates in respect of the values of the variables. Mathematical philosophy is well aware that these ultimate meditations on the nature of number are fusing with those upon pure logic, and an algebra of logic is talked of. The study of geometrical axioms has become a chapter of epistemology.

The aim to which all this is striving, and which in particular every Nature-researcher feels in himself as an impulse, is the achievement of a pure numerical transcendence, the complete and inclusive conquest of the visibly apparent and its replacement by a language of imagery unintelligible to the layman and impossible of sensuous realization—but a language that the great Faustian symbol of Infinite space endows with the dignity of inward necessity. The deep scepticism of these final judgments links the soul anew to the forms of early Gothic religiousness. The inorganic, known and dissected world-around, the World as Nature and System, has deepened itself until it is a pure sphere of functional numbers. But, as we have seen, number is one of the most primary symbols in every Culture; and consequently the way to pure number is the return of the waking consciousness to its own secret, the revelation of its own formal necessity. The goal reached, the vast and ever more meaningless and threadbare fabric woven around natural science falls apart. It was, after all, nothing but the inner structure of the “Reason,” the grammar by which it believed it could overcome the Visible and extract therefrom the True. But what appears under the fabric is once again the earliest and deepest, the Myth, the immediate Becoming, Life itself. The less anthropomorphic science believes itself to be, the more anthropomorphic it is. One by one it gets rid of the separate human traits in the Nature-picture, only to find at the end that the supposed pure Nature which it holds in its hand is—humanity itself, pure and complete. Out of the Gothic soul grew up, till it overshadowed the religious world-picture, the spirit of the City, the alter ego of irreligious Nature-science. But now, in the sunset of the scientific epoch and the rise of victorious Skepsis, the clouds dissolve and the quiet landscape of the morning reappears in all distinctness.

The final issue to which the Faustian wisdom tends—though it is only in the highest moments that it has seen it—is the dissolution of all knowledge into a vast system of morphological relationships. Dynamics and Analysis are in respect of meaning, form-language and substance, identical with Romanesque ornament, Gothic cathedrals, Christian-German dogma and the dynastic state. One and the same world-feeling speaks in all of them. They were born with, and they aged with, the Faustian Culture, and they present that Culture in the world of day and space as a historical drama. The uniting of the several scientific aspects into one will bear all the marks of the great art of counterpoint. An infinitesimal music of the boundless world-space—that is the deep unresting longing of this soul, as the orderly statuesque and Euclidean Cosmos was the satisfaction of the Classical. That—formulated by a logical necessity of Faustian reason as a dynamic-imperative causality, then developed into a dictatorial, hard-working, world-transforming science—is the grand legacy of the Faustian soul to the souls of Cultures yet to be, a bequest of immensely transcendent forms that the heirs will possibly ignore. And then, weary after its striving, the Western science returns to its spiritual home.