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can exercise no authority. It is now known that marriages bear a fixed and definite relation to the price of corn;34 and in England the experience of a century has proved that, instead of having any connexion with personal feelings, they are simply regulated by the average earnings of the great mass of the people:35 so that this immense social and religious institution is not only swayed, but is completely controlled, by the price of food and by the rate of wages. In other cases, uniformity has been detected, though the causes of the uniformity are still unknown. Thus, to give a curious instance, we are now able to prove that even the aberrations of memory are marked by this general character of necessary and invariable order. The post-offices of London and of Paris have latterly published returns of the number of letters which the writers, through forgetfulness, omitted to direct; and, making allowance for the difference of circumstances, the returns are year after year copies of each other. Year after year the same proportion of letter-writers forget this simple act; so that for each successive period we can actually foretell the number of persons whose memory will fail them in regard to this trifling and, as it might appear, accidental occurrence.36

      To those who have a steady conception of the regularity of events, and have firmly seized the great truth that the actions of men, being guided by their antecedents, are in reality never inconsistent, but, however capricious they may appear, only form part of one vast scheme of universal order, of which we in the present state of knowledge can barely see the outline – to those who understand this, which is at once the key and the basis of history, the facts just adduced, so far from being strange, will be precisely what would have been expected and ought long since to have been known. Indeed, the progress of inquiry is becoming so rapid and so earnest, that I entertain little doubt that before another century has elapsed, the chain of evidence will be complete, and it will be as rare to find an historian who denies the undeviating regularity of the moral world, as it now is to find a philosopher who denies the regularity of the material world.

      It will be observed, that the preceding proofs of our actions being regulated by law, have been derived from statistics; a branch of knowledge which, though still in its infancy,37 has already thrown more light on the study of human nature than all the sciences put together. But although the statisticians have been the first to investigate this great subject by treating it according to those methods of reasoning which in other fields have been found successful; and although they have, by the application of numbers, brought to bear upon it a very powerful engine for eliciting truth – we must not, on that account, suppose that there are no other resources remaining by which it may likewise be cultivated: nor should we infer that because the physical sciences have not yet been applied to history, they are therefore inapplicable to it. Indeed, when we consider the incessant contact between man and the external world, it is certain that there must be an intimate connexion between human actions and physical laws; so that if physical science had not hitherto been brought to bear upon history, the reason is, either that historians have not perceived the connexion, or else that, having perceived it, they have been destitute of the knowledge by which its workings can be traced. Hence there has arisen an unnatural separation of the two great departments of inquiry, the study of the internal and that of the external: and although, in the present state of European literature, there are some unmistakable symptoms of a desire to break down this artificial barrier, still it must be admitted that as yet nothing has been actually accomplished towards effecting so great an end. The moralists, the theologians, and the metaphysicians, continue to prosecute their studies without much respect for what they deem the inferior labours of scientific men; whose inquiries, indeed, they frequently attack, as dangerous to the interests of religion, and as inspiring us with an undue confidence in the resources of the human understanding. On the other hand, the cultivators of physical science, conscious that they are an advancing body, are naturally proud of their own success; and, contrasting their discoveries with the more stationary position of their opponents, are led to despise pursuits the barrenness of which has now become notorious.

      It is the business of the historian to mediate between these two parties, and reconcile their hostile pretensions by showing the point at which their respective studies ought to coalesce. To settle the terms of this coalition, will be to fix the basis of all history. For since history deals with the actions of men, and since their actions are merely the product of a collision between internal and external phenomena, it becomes necessary to examine the relative importance of those phenomena; to inquire into the extent to which their laws are known; and to ascertain the resources for future discovery possessed by these two great classes, the students of the mind and the students of nature. This task I shall endeavour to accomplish in the next two chapters: and if I do so with anything approaching to success, the present work will at least have the merit of contributing something towards filling up that wide and dreary chasm, which, to the hindrance of our knowledge, separates subjects that are intimately related, and should never be disunited.

Note A

      ‘Der Begriff der Freiheit ist ein reiner Vernunftbegriff, der eben darum für die theoretische Philosophie transcendent, d. i. ein solcher ist, dem kein angemessenes Beispiel in irgend einer möglichen Erfahrung gegeben werden kann, welcher also keinen Gegenstand einer uns möglichen theoretischen Erkenntniss ausmacht, und schlechterdings nicht für ein constitutives, sondern lediglich als regulatives, und zwar nur bloss negatives Princip der speculativen Vernunft gelten kann, im praktischen Gebrauche der selben aber seine Realität durch praktische Grundsätze beweist, die, als Gesetze, eine Causalität der reinen Vernunft, unabhängig von allen empirischen Bedingungen (dem Sinnlichen überhaupt), die Willkühr zu bestimmen, und einen reinen Willen in uns beweisen, in welchem die sittlichen Begriffe und Gesetze ihren Ursprung haben.’ Metaphysik der Sitten, in Kant's Werke, vol. v. pp. 20, 21. ‘Würden die Gegenstände der Sinnenwelt für Dinge an sich selbst genommen, und die oben angeführten Naturgesetze für Gesetze der Dinge an sich selbst, so wäre der Widerspruch’ (i. e. between Liberty and Necessity) ‘unvermeidlich. Ebenso, wenn das Subject der Freiheit gleich den übrigen Gegenständen als blose Erscheinung vorgestellt würde, so könnte ebensowohl der Widerspruch nicht vermieden werden; denn es würde ebendasselbe von einerlei Gegenständen in derselben Bedeutung zugleich bejaht und verneint werden. Ist aber Naturnothwendigkeit bloss auf Erscheinungen bezogen, und Freiheit bloss auf Dinge an sich selbst, so entspringt kein Widerspruch, wenn man gleich beide Arten von Causalität annimmt oder zugibt, so schwer oder unmöglich es auch sein möchte, die von der letzteren Art begreiflich zu machen.’ … ‘Natur also und Freiheit eben demselben Dinge, aber in verschiedener Beziehung, einmal als Erscheinung, das andre Mal als einem Dinge an sich selbst ohne Widerspruch beigelegt werden können.’ … ‘Nun kann ich ohne Widerspruch sagen: alle Handlungen vernünftiger Wesen, sofern sie Erscheinungen sind (in irgend einer Erfahrung angetroffen werden), stehen unter der Naturnothwendigkeit; eben dieselben Handlungen aber, bloss respective auf das vernünftige Subject und dessen Vermögen, nach blosser Vernunft zu handeln, sind frei.’ Prolegomena zu jeder künftigen Metaphysik, in Kant's Werke, vol. iii. pp. 268–270. ‘Denn ein Geschöpf zu sein und als Naturwesen bloss dem Willen seines Urhebers zu folgen; dennoch aber als freihandelndes Wesen (welches seinen vom äusseren Einfluss unabhängigen Willen hat, der dem ersteren vielfältig zuwider sein kann), der Zurechnung fähig zu sein, und seine eigene That doch auch zugleich als die Wirkung eines höheren Wesens anzusehen: ist eine Vereinbarung von Begriffen, die wir zwar in der Idee einer Welt, als des höchsten Gutes, zusammen denken müssen; die aber nur der einsehen kann, welcher bis zur Kenntniss der übersinnlichen (intelligiblen) Welt durchdringt und die Art einsieht, wie sie der Sinnenwelt zum Grunde liegt.’ Theodicee, in Kant's Werke, vol. vi. p. 149. ‘Nun wollen wir annehmen, die durch unsere Kritik nothwendig gemachte Unterscheidung der Dinge, als Gegenstände der Erfahrung, von eben denselben, als Dingen an sich selbst, wäre gar nicht gemacht, so müsste der Grundsatz der Causalität und mithin der Naturmechanismus in Bestimmung derselben durchaus von allen Dingen überhaupt als wirkenden Ursachen gelten. Von eben demselben Wesen also, z. B. der menschlichen Seele, würde ich nicht sagen können, ihr Wille sei frei, und er sei doch zugleich der Naturnothwendigkeit unterworfen, d. i. nicht frei, ohne in einen offenbaren Widerspruch zu gerathen; weil ich die Seele in beiden Sätzen in eben derselben Bedeutung, nämlich

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<p>34</p>

‘It is curious to observe how intimate a relation exists between the price of food and the number of marriages.’ … ‘The relation that subsists between the price of food and the number of marriages is not confined to our own country; and it is not improbable that, had we the means of ascertaining the facts, we should see the like result in every civilized community. We possess the necessary returns from France; and these fully bear out the view that has been given.’ Porter's Progress of the Nation, vol. ii. pp. 244, 245, London, 1838.

<p>35</p>

‘The marriage returns of 1850 and 1851 exhibit the excess which since 1750 has been invariably observed when the substantial earnings of the people are above the average.’ Journal of Statistical Society, vol. xv. p. 185.

<p>36</p>

See Somerville's Physical Geography, vol. ii. pp. 409–411, which, says this able writer, proves that ‘forgetfulness as well as free will is under constant laws.’ But this is using the word ‘free will’ in a sense different from that commonly employed.

<p>37</p>

Achenwall, in the middle of the eighteenth century, is usually considered to be the first systematic writer on statistics, and is said to have given them their present name. See Lewis, Methods of Observation and Reasoning in Politics, 1852, vol. i. p. 72; Biographie Universelle, vol. i. p. 140; Dufau, Traité de Statistique, pp. 9, 10. Even so late as 1800, the Bishop of Llandaff wrote to Sir John Sinclair, ‘I must think the kingdom is highly indebted to you for bringing forward a species of knowledge (statistics) wholly new in this country, though not new in other parts of Europe.’ Sinclair's Correspondence, vol. i. p. 230. Sinclair, notwithstanding his industry, was a man of slender powers, and did not at all understand the real importance of statistics, of which, indeed, he took a mere practical view. Since then statistics have been applied extensively to medicine; and still more recently, and on a smaller scale, to philology and to jurisprudence. Compare Bouillaud, Philosophie Médicale, pp. 96, 186; Renouard, Hist. de la Médecine, vol. ii. pp. 474, 475; Esquirol, Maladies Mentales, vol. ii. pp. 665–667; Holland's Medical Notes, pp. 5, 472; Vogel's Pathological Anatomy, pp. 15–17; Simon's Pathology, p. 180; Phillips on Scrofula, pp. 70, 118, &c.; Prichard's Physical Hist. of Mankind, vol. iv. p. 414; Eschbach, Etude du Droit, pp. 392–394.