Part 15 (1/2)
The growing influence of the natural sciences is expressed in words like this. The confidence in these sciences was becoming greater. The belief became predominant that through the means and the results of the natural sciences one could obtain a world conception that is free from the unsatisfactory elements of the Hegelian one.
A picture of the total change that took place in this direction can be derived from a book that can be considered as representative of this period in the fullest sense of the word, Alexander von Humboldt's, Cosmos, Sketch of a Physical World Description. The author, who represents the pinnacle of education in the field of physical science of his time, speaks of his confidence in a world conception of natural science: My confidence is based on the splendid state 'of the natural sciences themselves, whose wealth consists no longer in the abundance of their facts but in the interconnections of the observations. The general results that impress every educated mind as interesting have wonderfully multiplied since the end of the eighteenth century. The individual facts stand less isolated by themselves; the gaps between the formations are closed. What remained for a long time obscure to the inquiring mind when seen in a narrower horizon becomes explained through the observations that have been obtained on an expedition into the most distant regions. Forms of
plants and animals, which seemed to be isolated for a long time, are now falling in line through the discovery of connecting links or through forms of transition. A general interconnection, not in a simple linear direction, but in a netlike, woven texture according to a higher development, or the stunted growth of certain organisms, is what gradually unfolds before the eye of the inquiring natural observer. . . .
The general study of nature awakens in us, as it were, organs that have long been dormant. We enter into a more intimate relation with the outer world.
In his Cosmos, Humboldt leads the description of nature only to the gateway of a world conception. He does not make the attempt to connect the wealth of the phenomena by means of general ideas of nature, but links the things and facts in a natural way to each other as can be expected from ”the entirely objective turn of his mind.”
Soon other thinkers emerged who were bold enough to make combinations and who tried to penetrate into the nature of things on the basis of natural science. What they intended to produce was nothing less than a radical transformation of all former philosophical world and life conceptions by means of modern science and knowledge of nature. In the most forceful way the natural science of the nineteenth century had paved the way for them. What they intended to do is radically expressed by Feuerbach: To a.s.sume G.o.d before nature is about the same as to a.s.sume the church before you have the stone out of which it is built, or to a.s.sume that the art of architecture has put the stones together to make a building before the chemical compounds that make up the stone, in short, before the natural genesis and formation of the stone.
The first half of the century produced many results of natural science that are bricks for the architecture of a new structure of world conception. It is, to be sure, correct that a building cannot be erected if there are no bricks to do it with, but it is no less true that one cannot do anything with these bricks if, independent of them, a picture of the building to be erected does not exist. Just as no structure can come into existence if one puts these bricks together at random, one upon the other and side by side, joining them with mortar as they come, so can no world conception come from the individual known truths of natural science if there is not, independent of these and of physical research, a power in the human soul to form the world conception. This fact was left out of consideration by the antagonists of an independent philosophy.
In examining the personalities who in the eighteen-fifties took part in the erection of a structure of world conception, the features of three men are particularly prominent: Ludwig Buechner (1824 99), Carl Vogt (1817 95) and Jacob Moleschott (1822 93). If one wants to characterize the fundamental feeling that inspires these three men, one need only repeat Moleschott's words: If man has investigated all properties of the materials that make an impression on his developed sense organs, he has thereby grasped the essence of things. With this accomplishment he arrives at his - that is to say, humanity's - absolute knowledge. Another knowledge does not exist for man.
All philosophy that has been so far advanced has, according to these men, yielded only knowledge without lasting meaning.
The idealistic philosophers believe, according to Buechner and those who shared his views, that they derive their knowledge from reason. Through this method, however, one cannot, as Buechner maintains, come to a meaningful structure of
conceptions. ”But truth can only be gained by listening to nature and her rule,” says Moleschott. At that time and during the following years, the protagonists for such a world conception, directly derived from nature, were collectively called materialists. It was emphatically declared that this materialism was an age-old world conception, concerning which enlightened spirits had long recognized how unsatisfactory it was for a higher thinker. Buechner attacked that opinion. He pointed out that: In the first place materialism, or the whole philosophical current moving in its direction, has never been disproved. It is not only the oldest form of philosophical contemplation in existence but also one that emerged anew with new energies at every revival of philosophy in the course of history.
Furthermore, the materialism of our day is no longer the same as it was formerly with Epicurus or the Encyclopedists, but an entirely different thought current or methods, which is supported by the results of the positive sciences. This is a method that is distinguished from its preceding form by the fact that it is no more like the older materialism, a system, but a simple realistic philosophical contemplation of existence that, above all, traces the uniform principle in the world of nature and of the spirit, striving to show everywhere a natural and law-determined connection of all phenomena of that world.
Goethe's att.i.tude toward Holbach, one of the most prominent materialists of the eighteenth century French Encyclopedists, ill.u.s.trates the position a spirit, who strives in a most p.r.o.nounced way for a thinking in accordance with nature and does full justice to the mode of conception of natural science, can nevertheless take toward materialism. Paul Heinrich Dietrich von Holbach (1723 1789) published his Systeme de la Nature in 1770. Goethe, who came across this book in Stra.s.sburg, in Poetry and Truth describes the repulsive
impression that he received from it.
Matter was to be there from eternity, and it was to have been in motion from eternity. Through this motion, now to the right, now to the left in all directions, it was to have produced without further difficulty all the infinite phenomena of existence. This we might even have accepted as satisfactory if the author had really constructed before our eyes the world out of his matter in motion. But he might have known as little about nature as we did, for after postulating a few general concepts, he again turns away from nature in order to transform what appears higher than nature, or what appears as a higher nature in nature, into the material, heavy nature, to be sure, in motion, but without direction and shape, and he thinks that he gained a great deal in so doing.
Goethe was deeply convinced that ”theory in itself and by itself has no value except to make us believe in the connection of the phenomena.” (Sprueche in Prosa, Deutsche Nationalliteratur, Goethe's Werke, Vol. 36, 2, pp. 357.) The results of natural science gained in the first half of the nineteenth century were, to be sure, as knowledge of facts, well-suited to supply a foundation to the materialists of the fifties for their world conception. Science has penetrated deeper and deeper into the connections of the material processes insofar as they can be reached by sense observation and by the form of thinking that is based on that sense observation. If one now wants to deny to oneself and to others that there is spirit active in matter, one nevertheless unconsciously reveals this spirit. For what Friedrich Theodor Vischer says in the third volume of his essay, On Old and New Things, is in a certain sense quite correct. ”That the so-called matter can produce something, the function of which is spirit, is in itself the complete proof against materialism.” In this sense, Buechner unconsciously disproves materialism by
attempting to prove that the spiritual processes spring from the depths of the material facts presented to sense observation.
An example that shows how the results of natural science took on forms that could be of a deeply penetrating influence on the conception of the world is given in Woehler's discovery of 1828. This scientist succeeded in producing a substance synthetically outside the living organism that had previously only been known to be formed within. This experiment seemed to supply the proof that the former belief, which a.s.sumed that certain material compounds could be formed only under the influence of a special life force contained in the organism, was incorrect. If it was possible to produce such compounds outside the living body, then one could draw the conclusion that the organism was also working only with the forces with which chemistry deals. The thought arose for the materialists that, if the living organism does not need a special life force to produce what formerly had been attributed to such a force, why should this organism then need special spiritual energies in order to produce the processes to which mental experiences are bound? Matter in all its qualities now became for the materialists what generates all things and processes from its core. From the fact that carbon, hydrogen, oxygen and nitrogen combine in an organic compound, it did not seem far to go to Buechner's statement, ”The words soul, spirit, thought, feeling, will, life, do not stand for any real things but only for properties, qualifications, functions of the living substance, or results of ent.i.ties that have their basis in the material forms of existence.” A divine being or the human soul were no longer called immortal by Buechner, but rather matter and energy. Moleschott expressed the same conviction with the words: Energy is not a creative G.o.d; no essence of things is detachable from the material basis. It is a quality of matter,
inseparable from it, eternally inherent in it. Carbon, hydrogen and oxygen are the powers that split the firmest rock and transform it into fluid processes in which life is generated.
Change of matter and form in the individual parts while the fundamental structure remains the same is the mystery of animal life.
The research done in the first half of the nineteenth century in natural science enabled Ludwig Buechner to express the view, ”In a way similar to that in which the steam engine produces motion, the intricate organic complication of energy endowed materials in the animal body produces a sum total of certain effects, which, combined in a unity, are called spirit, soul, thought by us.” And Karl Gustav Reuschle declared in his book, Philosophy and Natural Science, in Memory of David Friedrich Strauss (1874), that the results of natural science themselves implied a philosophical element. The affinities that one discovered between the natural forces were thought to lead into the mysteries of existence.
Such an important relation was found by Oersted in 1819 in Copenhagen. He saw that a magnetic needle is deflected by an electric current. Faraday discovered the corresponding phenomenon in 1831, that by moving a magnet toward a spirally twisted copper wire, electricity can be generated in the latter. Electricity and magnetism thereby were shown to be related natural phenomena. Both energies were no longer isolated facts; it was now apparent that they had a common basis in their material existence. Julius Robert Mayer penetrated deeper into the nature of matter and energy in the eighteen-forties when he became aware of the fact that there exists a definite relation that can be expressed numerically between mechanical work and heat. Out of pressure, impact and friction, etc., that is to say, out of work, heat is generated.
In the steam engine, heat is again changed into work. The quant.i.ty of heat produced by a given amount of work can be
calculated from the quant.i.ty of this work. If one changes the quant.i.ty of heat that is necessary to heat a kilogram of water by one degree centigrade into work, one can with this work lift 424 kilograms to a height of one meter. It cannot be surprising that the discovery of such facts was considered to be a vast progress away from such explanations concerning matter as Hegel had offered: ”The transition from ideality to reality, from abstraction to concrete existence, in this case, from s.p.a.ce and time to the reality that appears as matter, is incomprehensible for the intellect and therefore appears to it always as something external and merely given.” The significance of a remark of this kind is recognized only if thought as such can be seen as something valuable. This consideration, however, would not occur to the above- mentioned thinkers.
To discoveries such as these concerning the unity of the organic forces of nature, others were added that threw light on the problem of the composition of the world of organisms. In 1838 the botanist, Schleiden, recognized the significance of the simple cell for the plant organism. He showed that every texture of the plant, and therefore the plant itself, is made up of these ”elementary organisms.” Schleiden had recognized this ”elementary organism” as a little drop of mucilaginous fluid surrounded by a cellular membrane. These cells are so multiplied and joined to one another that they form the structure of the plant. Soon after this, Schwann discovered the same general structure for the world of animal organisms.
Then, in 1827, the brilliant naturalist, Karl Ernst van Baer, discovered the human egg. He also described the process of the development of higher animals and of man from the egg.
In this way one had everywhere given up the attempt to look for ideas that could be considered fundamental for the things of nature. Instead, one had observed the facts that show in which way the higher, more complicated processes and
ent.i.ties of nature develop from the simpler and lower ones.
The men who were in search of an idealistic interpretation of the phenomena of the world became ever more rare. It was still the spirit of idealistic world conception that in 1837 inspired the anthropologist, Burdach, with the view that life did not have its origin in matter but rather a higher force transformed matter according to its own design. Moleschott had already said, ”The force of life, as life itself, is nothing more than the result of the complicated interacting and interweaving physical and chemical forces.”
The consciousness of the time tended to explain the universe through no other phenomena than those that are displayed before the eyes of men. Charles Lyell's work, Principles of Geology, which was published in 1830, brought the whole older geology to an end with this principle of explanation. Up to Lyell's epoch-making work it was believed that the evolution of the earth had taken place in abrupt revolutions.
Everything that had come into being on earth was supposed to have been destroyed repeatedly by complete catastrophes.
Over the graves of the victims new creations were supposed to have risen. In this manner, one explained the presence of the remnants of plants and animals in the various strata of the earth. Cuvier was the princ.i.p.al representative who believed in such repeated periods of creation. Lyell was convinced that it was unnecessary to a.s.sume such interruptions of the steady course of evolution of the earth. If one only presupposed sufficiently long periods of time, one could say that forces today still at work on earth caused the entire development. In Germany, Goethe and Karl von Hoff had already professed such a view. Von Hoff maintained it in his History of the Natural Changes of the Surface of the Earth, Doc.u.mented by Traditional Sources, which appeared in 1822. With great boldness of thought, enthusiasts Vogt, Buechner and Moleschott set out to explain all phenomena from material
processes as they take place before the senses of man.
The situation that arose when the physiologist, Rudolf Wagner, found himself opposed by Carl Vogt was typical of the intellectual warfare that the materialists had to wage. In 1852, in the paper, Allgemeine Zeitung, Wagner had declared himself in favor of accepting an independent soul ent.i.ty, thereby opposing the view of materialism. He said ”that the soul could divide itself because the child inherited much from his father and much also from his mother.” Vogt answered this statement for the first time in his Pictures from Animal Life. His position in this controversy is clearly exposed in the following: The soul, which is to be the substance, the very essence of the individuality of the individual, indivisible ent.i.ty, is to be capable of dividing itself. Theologists, be sure you catch this heretic. He has been up to now one of your people! Divided souls! If the soul can be divided in the act of conception as Mr.
Rudolf Wagner thinks, then it could also be possible that this soul could be divided in death, the portion that was burdened with sins going into purgatory, while the other part would go directly into paradise. Mr. Wagner also promises at the end of his physiological letters some excursions into the field of the physiology of the divided souls.
The controversy became intense when Wagner, at the a.s.sembly of natural scientists in Goettingen in 1854, read a paper against materialism ent.i.tled, Man's Creation and the Substance of the Soul. He meant to prove two things. In the first place, he set out to show that the results of modern physical science were not a contradiction of the biblical belief in the descent of the human race from one couple. In the second instance, he wanted to demonstrate that these results did not imply anything concerning the soul. Vogt wrote a polemical treatise, Bigoted Faith and Science (Koehlerglaube
und Wissenschaft), against Wagner in 1855, which showed him to be equipped with the full insight of the natural science of his time. At the same time, he appeared to be a sharp thinker who, without reserve, disclosed his opponents'
conclusions as illusions. Vogt's contradiction of Wagner's first statement comes to a climax in the pa.s.sage, ”All investigations of history and of natural history lead to the positive proof of the origin of the human races from a plurality of roots. The doctrines of the Scripture concerning Adam and Noah, and the twice occurring descent of man from a single couple are scientifically untenable legends.”
Against Wagner's doctrine of the soul, Vogt maintained that we see the psychical activities of man develop gradually as part of the development of the physical organs. From childhood to the maturity of life we observe that the spiritual activities become more perfect. With the shrinking of the senses and the brain, the ”spirit” shrinks proportionally. ”A development of this kind is not consistent with the a.s.sumption of an immortal soul substance that has been planted into the brain as its organ.”
That the materialists, as they fought their opponents, were not merely confronted with intellectual reasons but also with emotions, becomes perfectly clear in the controversy between Vogt and Wagner. For Wagner had appealed, in a paper at Goettingen, for the moral need that could not endure the thought that ”mechanical machines walking about with two arms and legs” should finally be dissolved into indifferent material substances, without leaving us the hope that the good they are doing should be rewarded and the evil punished.