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rel="nofollow" href="#n303" type="note">303 The further these two great schools advance, the more marked does their divergence become. They are at open war in every department of morals, of philosophy, and of art. The idealists say that all men have essentially the same notion of the good, the true, and the beautiful. The sensationalists affirm that there is no such standard, because ideas depend upon sensations, and because the sensations of men depend upon the changes in their bodies, and upon the external events by which their bodies are affected.

      Such is a short specimen of the opposite conclusions to which the ablest metaphysicians have been driven, by the simple circumstance that they have pursued opposite methods of investigation. And this is the more important to observe, because, after these two methods have been employed, the resources of metaphysics are evidently exhausted.304 Both parties agree that mental laws can only be discovered by studying individual minds, and that there is nothing in the mind which is not the result either of reflection or of sensation. The only choice, therefore, they have to make, is between subordinating the results of sensation to the laws of reflection, or else subordinating the results of reflection to the laws of sensation. Every system of metaphysics has been constructed according to one of these schemes; and this must always continue to be the case, because, when the two schemes are added together, they include the totality of metaphysical phenomena. Each process is equally plausible;305 the supporters of each are equally confident; and, by the very nature of the dispute, it is impossible that any middle term should be found; nor can there ever be an umpire, because no one can mediate between metaphysical controversies without being a metaphysician, and no one can be a metaphysician without being either a sensationalist or an idealist; in other words, without belonging to one of those very parties whose claims he professes to judge.306

      On these grounds, we must, I think, arrive at the conclusion, that as metaphysicians are unavoidably, and by the very nature of their inquiry, broken up into two completely antagonistic schools, the relative truth of which there are no means of ascertaining; as they, moreover, have but few resources, and as they use those resources according to a method by which no other science has ever been developed, – we, looking at these things, ought not to expect that they can supply us with sufficient data for solving those great problems which the history of the human mind presents to our view. And whoever will take the pains fairly to estimate the present condition of mental philosophy, must admit that, notwithstanding the influence it has always exercised over some of the most powerful minds, and through them over society at large, there is, nevertheless, no other study which has been so zealously prosecuted, so long continued, and yet remains so barren of results. In no other department has there been so much movement, and so little progress. Men of eminent abilities, and of the greatest integrity of purpose, have in every civilized country, for many centuries, been engaged in metaphysical inquiries; and yet at the present moment their systems, so far from approximating towards truth, are diverging from each other with a velocity which seems to be accelerated by the progress of knowledge. The incessant rivalry of the hostile schools, the violence with which they have been supported, and the exclusive and unphilosophic confidence with which each has advocated its own method, – all these things have thrown the study of the mind into a confusion only to be compared to that in which the study of religion has been thrown by the controversies of the theologians.307 The consequence is, that if we except a very few of the laws of association, and perhaps I may add the modern theories of vision and of touch,308 there is not to be found in the whole compass of metaphysics a single principle of importance, and at the same time of incontestable truth. Under these circumstances, it is impossible to avoid a suspicion that there is some fundamental error in the manner in which these inquiries have been prosecuted. For my own part, I believe that, by mere observation of our own minds, and even by such rude experiments as we are able to make upon them, it will be impossible to raise psychology to a science; and I entertain very little doubt that metaphysics can only be successfully studied by an investigation of history so comprehensive as to enable us to understand the conditions which govern the movements of the human race.309

       CHAPTER IV

      MENTAL LAWS ARE EITHER MORAL OR INTELLECTUAL. COMPARISON OF MORAL AND INTELLECTUAL LAWS, AND INQUIRY INTO THE EFFECT PRODUCED BY EACH ON THE PROGRESS OF SOCIETY

      In the preceding chapter, it has, I trust, been made apparent, that, whatever may hereafter be the case, we, looking merely at the present state of our knowledge, must pronounce the metaphysical method to be unequal to the task, often imposed upon it, of discovering the laws which regulate the movements of the human mind. We are, therefore, driven to the only remaining method, according to which mental phenomena are to be studied, not simply as they appear in the mind of the individual observer, but as they appear in the actions of mankind at large. The essential opposition between these two plans is very obvious: but it may perhaps be well to bring forward further illustration of the resources possessed by each for the investigation of truth; and for this purpose, I will select a subject which, though still imperfectly understood, supplies a beautiful instance of the regularity with which, under the most conflicting circumstances, the great Laws of Nature are able to hold their course.

      The case to which I refer, is that of the proportion kept up in the births of the sexes; a proportion which if it were to be greatly disturbed in any country, even for a single generation, would throw society into the most serious confusion, and would infallibly cause a great increase in the vices of the people.310 Now, it has always been suspected that, on an average, the male and female births are tolerably equal; but, until very recently, no one could tell whether or not they are precisely equal, or, if unequal, on which side there is an excess.311 The births being the physical result of physical antecedents, it was clearly seen that the laws of the births must be in those antecedents; that is to say, that the causes of the proportion of the sexes must reside in the parents themselves.312 Under these circumstances, the question arose, if it was not possible to elucidate this difficulty by our knowledge of animal physiology; for it was plausibly said, ‘Since physiology is a study of the laws of the body,313 and since all births are products resulting from the body, it follows that if we know the laws of the body, we shall know the laws of the birth.’ This was the view taken by physiologists of our origin;314 and this is precisely the view taken by metaphysicians of our history. Both parties believed that it was possible at once to rise to the cause of the phenomenon, and by studying its laws predict the phenomenon itself. The physiologist said, ‘By studying individual bodies, and thus ascertaining the laws which regulate the union of the parents, I will discover the proportion of the sexes, because the proportion is merely the result to which the union gives rise.’ Just in the same way, the metaphysician says, ‘By studying individual minds, I will ascertain the laws which govern their movements; and in that way I will predict the movements of mankind, which are obviously compounded of the individual movements.’315 These are the expectations which have been confidently held out, by physiologists respecting the laws of the sexes, and by metaphysicians respecting the laws of history. Towards the fulfilment, however, of these promises the metaphysicians have done absolutely nothing; nor have the physiologists been more successful, although their views have the support of anatomy, which admits of the employment of direct experiment, a resource unknown to metaphysics. But towards settling the present question, all this availed them nothing; and physiologists are not yet possessed of a single fact which throws any light on this problem: Is the number of male births equal to female births – is it greater, or is it less?

      These are questions to which all the resources of physiologists, from Aristotle down to our own time, afford no means of reply.316 And yet at the present day we, by the employment of what now seems a very natural method, are possessed of a truth which the united abilities of a

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<p>304</p>

To avoid misapprehension, I may repeat, that, here and elsewhere, I mean by metaphysics, that vast body of literature which is constructed on the supposition that the laws of the human mind can be generalized solely from the facts of individual consciousness. For this scheme, the word ‘metaphysics’ is rather inconvenient, but it will cause no confusion if this definition of it is kept in view by the reader.

<p>305</p>

What a celebrated historian of philosophy says of Platonism, is equally true of all the great metaphysical systems: ‘Dass sie ein zusammenhängendes harmonisches Ganzes ausmachen (i. e. the leading propositions of it) fällt in die Augen.’ Tennemann, Geschichte der Philosophie, vol. ii. p. 527. And yet he confesses (vol. iii. p. 52) of it and the opposite system: ‘und wenn man auf die Beweise siehet, so ist der Empirismus des Aristoteles nicht besser begründet als der Rationalismus des Plato.’ Kant admits that there can be only one true system, but is confident that he has discovered what all his predecessors have missed. Die Metaphysik der Sitten, in Kant's Werke, vol. v. p. 5, where he raises the question, ‘ob es wohl mehr, als eine Philosophie geben könne.’ In the Kritik, and in the Prolegomena zujeder künftigen Metaphysik, he says that metaphysics have made no progress, and that the study can hardly be said to exist. Werke, vol. ii. pp. 49, 50, vol. iii. pp. 166, 246.

<p>306</p>

We find a curious instance of this, in the attempt made by M. Cousin to found an eclectic school; for this very able and learned man has been quite unable to avoid the one-sided view which is to every metaphysician an essential preliminary; and he adopts that fundamental distinction between necessary ideas and contingent ideas, by which the idealist is separated from the sensationalist: ‘la grande division des idées aujourd'hui établie est la division des idées contingentes et des idées nécessaires.’ Cousin, Hist. de la Philosophie, II. série, vol. i. p. 82: see also vol. ii. p. 92, and the same work, I. série, vol. i. pp. 249, 267, 268, 311, vol. iii. pp. 51–54. M. Cousin constantly contradicts Locke, and then says he has refuted that profound and vigorous thinker; while he does not even state the arguments of James Mill, who, as a metaphysician, is the greatest of our modern sensationalists, and whose views, whether right or wrong, certainly deserve notice from an eclectic historian of philosophy.

Another eclectic, Sir W. Hamilton, announces (Discussions on Philosophy, p. 597) ‘an undeveloped philosophy, which, I am confident, is founded upon truth. To this confidence I have come, not merely through the convictions of my own consciousness, but by finding in this system a centre and conciliation for the most opposite of philosophical opinions.’ But, at p. 589, he summarily disposes of one of the most important of these philosophical opinions as ‘the superficial edifice of Locke.’

<p>307</p>

Berkeley, in a moment of candour, inadvertently confesses what is very damaging to the reputation of his own pursuits: ‘Upon the whole, I am inclined to think that the far greater part, if not all, of those difficulties which have hitherto amused philosophers, and blocked up the way to knowledge, are entirely owing to ourselves. That we have first raised a dust, and then complain we cannot see.’ Principles of Human Knowledge, in Berkeley's Works, vol. i. p. 74. Every metaphysician and theologian should get this sentence by heart: ‘That we have first raised a dust, and then complain we cannot see.’

<p>308</p>

Some of the laws of association, as stated by Hume and Hartley, are capable of historical verification, which would change the metaphysical hypothesis into a scientific theory. Berkeley's theory of vision, and Brown's theory of touch, have, in the same way, been verified physiologically; so that we now know what otherwise we could only have suspected.

<p>309</p>

In regard to one of the difficulties stated in this chapter as impeding metaphysicians, it is only just to quote the remarks of Kant: ‘Wie aber das Ich, der ich denke, von dem Ich, das sich selbst anschaut, unterschieden (indem ich mir noch andere Anschauungsart wenigstens als möglich vorstellen kann), und doch mit diesem letzteren als dasselbe Subject einerlei sei, wie ich also sagen könne: Ich als Intelligenz und denkend Subject, erkenne mich selbst als gedachtes Object, so fern ich mir noch über das in der Anschauung gegeben bin, nur, gleich anderen Phänomenen, nicht wie ich vor dem Verstande bin, sondern wie ich mir erscheine, hat nicht mehr auch nicht weniger Schwierigkeit bei sich, als wie ich mir selbst überhaupt ein Object und zwar der Anschauung und innerer Wahrnehmungen sein könne.’ Kritik der reinen Vernunft, in Kant's Werke, vol. ii. p. 144. I am very willing to let the question rest on this: for to me it appears that both cases are not only equally difficult, but, in the present state of our knowledge, are equally impossible.

<p>310</p>

Thus we find that the Crusades, by diminishing the proportion of men to women in Europe, increased licentiousness. See a curious passage in Sprengel, Histoire de la Médecine, vol. ii. p. 376. In Yucatan, there is generally a considerable excess of women, and the result is prejudicial to morals. Stephens's Central America, vol. iii. pp. 380, 429. On the other hand, respecting the state of society produced by an excess of males, see Mallet's Northern Antiquities, p. 259; Journal of Geographical Society, vol. xv. p. 45, vol. xvi. p. 307; Southey's Commonplace Book, third series, p. 579.

<p>311</p>

On this question a variety of conflicting statements may be seen in the old writers. Goodman, early in the seventeenth century, supposed that more females were born than males. Southey's Commonplace Book, third series, p. 696. Turgot (Œuvres, vol. ii. p. 247) rightly says, ‘il naît un peu plus d'hommes que de femmes;’ but the evidence was too incomplete to make this more than a lucky guess; and I find that even Herder, writing in 1785, takes for granted that the proportion was about equal: ‘ein ziemliches Gleichmass in den Geburten beider Geschlechter’ (Ideen zur Geschichte, vol. ii. p. 149), and was sometimes in favour of girls, ’ja, die Nachrichten mehrerer Reisenden machen es wahrscheinlich, dass in manchen dieser Gegenden wirklich mehr Töchter als Söhne geboren werden.’

<p>312</p>

A question, indeed, has been raised as to the influence exercised by the state of the mind during the period of orgasm. But whatever this influence may be, it can only affect the subsequent birth through and by physical antecedents, which in every case must be regarded as the proximate cause. If, therefore, the influence were proved to exist, we should still have to search for physical laws: though such laws would of course be considered merely as secondary ones, resolvable into some higher generalization.

<p>313</p>

Some writers treat physiology as a study of the laws of life. But this, looking at the subject as it now stands, is far too bold a step, and several branches of knowledge will have to be raised from their present empirical state, before the phenomena of life can be scientifically investigated. The more rational mode seems to be, to consider physiology and anatomy as correlative; the first forming the dynamical, and the second forming the statical part of the study of organic structure.

<p>314</p>

‘Voulez-vous savoir de quoi dépend le sexe des enfants? Fernel vous répond, sur la foi des anciens, qu'il dépend des qualités de la semence du père et de la mère.’ Renouard, Histoire de la Médecine, Paris, 1846, vol. ii. p. 106; see also, at p. 185, the opinion of Hippocrates, adopted by Galen; and similar views in Lepelletier, Physiologie Médicale, vol. iv. p. 332, and Sprengel, Hist. de la Médecine, vol. i. pp. 252, 10, vol. ii. p. 115, vol. iv. p. 62. For further information as to the opinions which have been held respecting the origin of sexes, see Beausobre, Histoire de Manichée, vol. ii. p. 417; Asiatic Researches, vol. iii. pp. 358, 361; Vishnu Purana, p. 349; Works of Sir William Jones, vol. iii. p. 126; Ritter's History of Ancient Philosophy, vol. iii. p. 191; Denham and Clapperton's Africa, pp. 323, 324; Maintenon, Lettres Inédites, vol. ii. p. 62; and the view of Hohl (Burdach's Physiologie, vol. ii. p. 472), ‘que les femmes chez lesquelles prédomine le système artériel procréent des garçons, au lieu que celles dont le système veineux a la prédominance mettent au monde des filles.’ According to Anaxagoras the question was extremely simple: καὶ ἄρρενα μὲν ἀπὸ τῶν δεξιῶ,θήλεα δὲ ἀπὸ τῶν ἀριστερῶν. Diog. Laert. ii. 9, vol. i. p. 85.

<p>315</p>

‘Le metaphysicien se voit comme la source de l'évidence et le confident de la nature: Moi seul, dit-il, je puis généraliser les idées, et découvrir le germe des événements qui se développent journellement dans le monde physique et moral; et c'est par moi seul que l'homme peut être éclairé.’ Helvetius, de l'Esprit, vol. i. p. 86. Compare Herder, Ideen zur Geschichte der Menschheit, vol. ii. p. 105. Thus, too, M. Cousin (Hist. de la Philosophie, II. série, vol. i. p. 131) says, ‘Le fait de la conscience transporté de l'individu dans l'espèce et dans l'histoire, est la clef de tous les développements de l'humanité.’

<p>316</p>

Considering the very long period during which physiology has been studied, it is remarkable how little the physiologists have contributed towards the great and final object of all science, namely, the power of predicting events. To me it appears that the two principal causes of this are, the backwardness of chemistry, and the still extremely imperfect state of the microscope, which even now is so inaccurate an instrument, that when a high power is employed, little confidence can be placed in it; and the examination, for instance, of the spermatozoa has led to the most contradictory results. In regard to chemistry, MM. Robin and Verdeil, in their recent great work, have ably proved what manifold relations there are between it and the further progress of our knowledge of the animal frame; though I venture to think that these eminent writers have shown occasionally an undue disposition to limit the application of chemical laws to physiological phenomena. See Robin et Verdeil, Chimie Anatomique et Physiologique, Paris, 1853, vol. i. pp. 20, 34, 167, 337, 338, 437, 661, vol. ii. pp. 136, 137, 508, vol. iii. pp. 135, 144, 183, 281, 283, 351, 547. The increasing tendency of chemistry to bring under its control what are often supposed to be purely organic phenomena, is noticed cautiously in Turner's Chemistry, vol. ii. p. 1308, London, 1847; and boldly in Liebig's Letters on Chemistry, 1851, pp. 250, 251. The connexion between chemistry and physiology is touched on rather too hastily in Bouilland, Philosophie Médicale, pp. 160, 257; Broussais, Examen des Doctrines Médicales, vol. iii. p. 166; Brodie's Lectures on Pathology, p. 48; Henle, Traité d'Anatomie, vol. i. pp. 25, 26; Feuchtersleben's Medical Psychology, p. 88; but better in Holland's Medical Notes, 1839, p. 270, a thoughtful and suggestive work. On the necessity of chemistry for increasing our knowledge of embryology, compare Wagner's Physiology, pp. 131, 132 note, with Burdach, Traité de Physiologie, vol. iv. pp. 59, 168.