AUGUSTE COMTE

and

POSITIVISM

II

THE FIRST SYSTEM

Cours de Philosophie Positive

(1830-1842)

Part Two consists of selections from Comte's first great work, Cours de philosophie posilive (6 vols., Paris, 1830-- 1842). The standard English rendering of this work is a free translation and condensation by Harriet Martineau, published in 1853 in two volumes as The Positive Philosophy of Auguste Comte. It should be noted, however, that Comte enthusiastically approved of this version of the work.

INTRODUCTION

CHAPTER 1

Account of the Aim of This Work; View of the Nature and Importance of the Positive Philosophy

A general statement of any system of philosophy may be either a sketch of a doctrine to be established, or a summary of a doctrine already established. If greater value belongs to the last, the first is still important, as characterizing from its origin the subject to be treated. In a case like the present, where the proposed study is vast and hitherto indeterminate, it is especially important that the field of research should be marked out with all possible accuracy. For this purpose, I will glance at the considerations that have originated this work and that will be fully elaborated in the course of it.

In order to understand the true value and character of the positive philosophy, we must take a brief general view of the progressive course of the human mind, regarded as a whole, for no conception can be understood otherwise than through its history.

From the study of the development of human intelligence, in all directions, and through all times, the discovery arises of a great fundamental law, to which it is necessarily subject, and which has a solid foundation of proof, both in the facts of our organization and in our historical experience. The law is this: that each of our leading conceptions-each branch of our knowledge-passes successively through three different theoretical conditions: the theological, or fictitious; the metaphysical, or abstract; and the scientific, or positive. In other words, the human mind, by its nature, employs in its progress three methods of philosophizing, the character of which is essentially different, and even radically opposed: namely, the theological method, the metaphysical; and the positive. Hence arise three philosophies, or general systems of conceptions on the aggregate of phenomena, each of which excludes the others. The first is the necessary point of

71

departure of the human understanding, and the third is its fixed and definitive state. The second is merely a state of transition.

In the theological state, the human mind, seeking the essential nature of beings, the first and final causes (the origin and purpose) of all effects-in short, absolute knowledge-supposes all phenomena to be produced by the immediate action of supernatural beings.

In the metaphysical state, which is only a modification of the first, the mind supposes, instead of supernatural beings, abstract forces, veritable entities (that is, personified abstractions) inherent in all beings, and capable of producing all phenomena. What is called the explanation of phenomena is, in this stage, a mere reference of each to its proper entity.

In the final, the positive, state, the mind has given over the vain search after absolute notions, the origin and destination of the universe, and the causes of phenomena, and applies itself to the study of their laws-that is, their invariable relations of succession and resemblance. Reasoning and observation, duly combined, are the means of this knowledge. What is now understood when we speak of an explanation of facts is simply the establishment of a connection between single phenomena and some general facts, the number of which continually diminishes with the progress of science.

The theological system arrived at the highest perfection of which it is capable when it substituted the providential action of a single Being for the varied operations of the numerous divinities that had been before imagined. In the same way, in the last stage of the metaphysical system, men substitute one great entity (Nature) as the cause of all phenomena, instead of the multitude of entities at first supposed. In the same way, again, the ultimate perfection of the positive system would be (if such perfection could be hoped for) to represent all phenomena as particular aspects of a single general fact-such as gravitation, for instance.

The importance of the working of this general law will be established hereafter. At present, it must suffice to point out some of its grounds.

There is no science that, having attained the positive stage, does not bear marks of having passed through the others. Some time back, it was (whatever it might be) composed, as we can now perceive, of metaphysical abstractions; and further back in the course of time, it took its form from theological conceptions. We shall have only too much occasion to see, as we proceed, that our most advanced sciences

NATURE AND IMPORTANCE OF THE POSITIVE PHILOSOPHY 73

still bear very evident marks of the two earlier periods through which they have passed.

The progress of the individual mind is not only an illustration, but an indirect evidence of that of the general mind. The point of departure of the individual and of the race being the same, the phases of the mind of a man correspond to the epochs of the mind of the race. Now, each of us is aware, if he looks back upon his own history, that he was a theologian in his childhood, a metaphysician in his youth, and natural philosopher in his manhood. All men who are up to their age can verify this for themselves.

Besides the observation of facts, we have theoretical reasons in support of this law.

The most important of these reasons arises from the necessity that always exists for some theory to which to refer our facts, combined with the clear impossibility that, at the outset of human knowledge, men could have formed theories out of the observation of facts. All good intellects have repeated, since Bacon's time, that there can be no real knowledge but that which is based on observed facts. This is incontestable, in our present advanced stage; but, if we look back to the primitive stage of human knowledge, we shall see that it must have been otherwise then. If it is true that every theory must be based upon observed facts, it is equally true that facts cannot be observed without the guidance of some theory. Without such guidance our facts would be desultory and fruitless; we could not retain them: for the most part we could not even perceive them.

Thus, between the necessity of observing facts in order to form a theory, and having a theory in order to observe facts, the human mind would have been entangled in a vicious circle, but for the the natural opening afforded by theological conceptions. This is the fundamental reason for the theological character of the primitive philosophy. This necessity is confirmed by the perfect suitability of the theological philosophy to the earliest researches of the human mind. It is remarkable that the most inaccessible questions-those of the nature of beings and the origin and purpose of phenomena-should be the first to occur in a primitive state, while those that are really within our reach are regarded as almost unworthy of serious study. The reason is evident enough: that experience alone can teach us the measure of our powers; and if men had not begun by an exaggerated estimate of what they can do, they would never have done all that they are capable of. Our organization requires this. At such a period there

could have been no reception of a positive philosophy, whose function is to discover the laws of phenomena, and whose leading characteristic it is to regard as interdicted to human reason those sublime mysteries that theology explains, even to their minutest details, with the most attractive facility. It is just so under a practical view of the nature of the researches with which men first occupied themselves. Such inquiries offered the powerful charm of unlimited empire over the external world-a world destined wholly for our use, and involved in every way with our existence. The theological philosophy, presenting this view, administered exactly the stimulus necessary to incite the human mind to the irksome labor without which it could make no progress. We can now scarcely conceive of such a state of things, our reason having become sufficiently mature to enter upon laborious scientific researches without needing any such stimulus as wrought upon the imaginations of astrologers and alchemists. We have motive enough in the hope of discovering the laws of phenomena, with a view to the confirmation or rejection of a theory. But it could not be so in the earliest days; and it is to the chimeras of astrology and alchemy that we owe the long series of observations and experiments on which our positive science is based. Kepler felt this on behalf of astronomy, and Berthollet on behalf of chemistry. Thus was a spontaneous philosophy, the theological, the only possible beginning, method, and provisional system, out of which the positive philosophy could grow. It is easy, after this, to perceive how metaphysical methods and doctrines must have afforded the means of transition from the one to the other.

The human understanding, slow in its advance, could not step at once from the theological into the positive philosophy. The two are so radically opposed that an intermediate system of conceptions has been necessary to render the transition possible. It is only in doing this that metaphysical conceptions have any utility whatever. In contemplating phenomena, men substitute for supernatural direction a corresponding entity. This entity may have been supposed to be derived from the supernatural action; but it is more easily lost sight of, leav- ing attention free for the facts themselves, till, at length, metaphysical agents have ceased to be anything more than the abstract names of phenomena. It is not easy to say by what other process than this our minds could have passed from supernatural considerations to natural, from the theological system to the positive.

The law of human development being thus established, let us consider what is the proper nature of the positive philosophy.

NATURE AND IMPORTANCE OF THE POSITIVE PHILOSOPHY 75

As we have seen, the first characteristic of the positive philosophy is that it regards all phenomena as subjected to invariable natural laws. Our business is--seeing how vain is any research into what are called causes, whether first or final-to pursue an accurate discovery of these laws, with a view to reducing them to the smallest possible number. By speculating upon causes, we could solve no difficulty about origin and purpose. Our real business is to analyze accurately the circumstances of phenomena, and to connect them by the natural relations of succession and resemblance. The best illustration of this is in the case of the doctrine of gravitation. We say that the general phenomena of the universe are explained by it, because it connects under one head the whole immense variety of astronomical facts; exhibiting the constant tendency of atoms towards each other in direct proportion to their masses, and in inverse proportion to the squares of their distances; while the general fact itself is a mere extension of one that is perfectly familiar to us and that we therefore say that we know-the weight of bodies on the surface of the earth. As to what weight and attraction are, we have nothing to do with that, for it is not a matter of knowledge at all. Theologians and metaphysicians may imagine and refine about such questions, but positive philosophy rejects them. When any attempt has been made to explain them, it has ended only in saying that attraction is universal weight, and that weight is terrestrial attraction-that is, that the two orders of phenomena are identical, which is the point from which the question set out. Again, M. Fourier, in his fine series of researches on heat, has given us all the most important and precise laws of the phenomena of heat, and many large and new truths, without once inquiring into its nature, as his predecessors had done when they disputed about calorific matter and the action of a universal ether. In treating his subject in the positive method, he finds inexhaustible material for all his activity of research, without betaking himself to insoluble questions.

Before ascertaining the stage that the positive philosophy has reached, we must bear in mind that the different kinds of our knowledge have passed through the three stages of progress at different rates, and have not therefore arrived at the same time. The rate of advance depends on the nature of the knowledge in question so distinctly that, as we shall see hereafter, this consideration constitutes an accessary to the fundamental law of progress. Any kind of knowledge reaches the positive stage early in proportion to its generality,

simplicity, and independence of other departments. Astronomical science, which is above all made up of facts that are general, simple, and independent of other sciences, arrived first; then terrestrial physics; then chemistry; and, at length, physiology.

It is difficult to assign any precise date to this revolution in science. It may be said, like everything else, to have been always going on, especially since the labors of Aristotle and the school of Alexandria, and then from the introduction of natural science into the West of Europe by the Arabs. But, if we must fix upon some marked period, to serve as a rallying point, it must be that-about two centuries ago--when the human mind was astir under the precepts of Bacon, the conceptions of Descartes, and the discoveries of Galileo. Then it was that the spirit of the positive philosophy rose up in opposition to that of the superstitious and scholastic systems that had hitherto obscured the true character of all science. Since that date, the progress of the positive philosophy and the decline of the other two have been so marked that no rational mind now doubts that the revolution is destined to go on to its completion--every branch of knowledge being sooner or later brought within the operation of positive philosophy. This is not yet the case. Some are still lying outside, and not till they are brought in will the positive philosophy possess that character of universality that is necessary to its definitive constitution.

In mentioning just now the four principal categories of phenomena--astronomical, physical, chemical, and physiological--there was an omission which will have been noticed. Nothing was said of social phenomena. Though involved with the physiological, social phenomena demand a distinct classification, on account of both their importance and their difficulty. They are the most individual, the most complicated, the most dependent on all others; and therefore they must be the latest-even if they had no special obstacle to encounter. This branch of science has not hitherto entered into the domain of be of positive philosophy. Theological and metaphysical methods; exploded in other departments, are as yet exclusively applied, both in the way of inquiry and discussion, in all treatment of social subjects, though the best minds are heartily weary of eternal disputes about divine right and the sovereignty of the people. This is the great, while it is evidently the only, gap that has to be filled to constitute, solid and entire, the positive philosophy. Now that the human mind has grasped celestial and terrestrial physics-mechanical and chemical; organic physics, both vegetable and animal-there remains one science, to fill

NATURE AND IMPORTANCE OF THE POSITIVE PHILOSOPHY 77

up the series of sciences of observation: social physics. This is what men have now most need of, and this it is the principal aim of the present work to establish.

It would be absurd to pretend to offer this new science at once in a complete state. Others, less new, are in very unequal conditions of forwardness. But the same character of positivity that is impressed on all the others will be shown to belong to this. This once done, the philosophical system of the moderns will be in fact complete, as there will then be no phenomenon that does not naturally enter into some one of the five great categories. All our fundamental conceptions having become homogeneous, the positive state will be fully established. It can never again change its character, though it will be forever in course of development by additions of new knowledge. Having acquired the character of universality which has hitherto been the only advantage resting with the two preceding systems, it will supersede them by its natural superiority, and leave to them only a historical existence.

We have stated the special aim of this work. Its secondary and general aim is this: to review what has been effected in the sciences, in order to show that they are not radically separate, but all branches from the same trunk. If we had confined ourselves to the first and special object of the work, we should have produced merely a study of social physics, whereas, in introducing the second and general, we offer a study of positive philosophy, passing in review all the positive sciences already formed.

The purpose of this work is not to give an account of the natural sciences. Besides that it would be endless, and that it would require a scientific preparation such as no one man possesses, it would be apart from our object, which is to go through a course of not positive science but positive philosophy. We have only to consider each fundamental science in its relation to the whole positive system, and to the spirit which characterizes it; that is, with regard to its methods and its chief results.

The two aims, though distinct, are inseparable; for, on the one hand, there can be no positive philosophy without a basis of social science, without which it could not be all-comprehensive; and, on the other hand, we could not pursue social science without having been prepared by the study of phenomena less complicated than those of society, and furnished with a knowledge of laws and anterior facts that have a bearing upon social science. Though the fundamental sciences

are not all equally interesting to ordinary minds, there is no one of them that can be neglected in an inquiry like the present; and, in the eye of philosophy, all are of equal value to human welfare. Even those that appear the least interesting have their own value, either on account of the perfection of their methods, or as being the necessary basis of all the others.

Lest it should be supposed that our course will lead us into a wilderness of such special studies as are at present the bane of a true positive philosophy, we will briefly advert to the existing prevalence of such special pursuit. In the primitive state of human knowledge there is no regular division of intellectual labor. Every student cultivates all the sciences. As knowledge accrues, the sciences part off; and students devote themselves each to some one branch. It is owing to this division of employment, and concentration of whole minds upon a single department, that science has made so prodigious an advance in modern times; and the perfection of this division is one of the most important characteristics of the positive philosophy. But, while admitting all the merits of this change, we cannot be blind to the eminent disadvantages that arise from the limitation of minds to a particular study. It is inevitable that each should be possessed with exclusive notions, and be therefore incapable of the general superiority of ancient students, who actually owed that general superiority to the inferiority of their knowledge. We must consider whether the evil can be avoided without losing the good of the modern arrangement; for the evil is becoming urgent. We all acknowledge that the divisions established for the convenience of scientific pursuit are radically artificial; and yet there are very few who can embrace in idea the whole of any one science: each science, moreover, being itself only a part of a great whole. Almost every one is busy about his own particular section, without much thought about its relation to the general system of positive knowledge. We must not be blind to the evil , or slow in seeking a remedy. We must not forget that this is the weak side of the positive philosophy, by which it may yet be attacked, with some hope of success, by the adherents of the theological and metaphysical systems. As to the remedy, it certainly does not lie in a return to the ancient confusion of pursuits, which would be mere retrogression, if it were possible, which it is not. It lies in perfecting the division of employments itself-in carrying it one degree higher--in constituting one more speciality from the study of scientific generalities. Let us have a new class of students, suitably prepared, whose business it

NATURE AND IMPORTANCE OF THE POSITIVE PHILOSOPHY 79

shall be to take the respective sciences as they are, determine the spirit of each, ascertain their relations and mutual connection, and reduce their respective principles to the smallest number of general principles, in conformity with the fundamental rules of the positive method. At the same time, let other students be prepared for their special pursuit by an education that recognizes the whole scope of positive science, so as to profit by the labors of the students of generalities, and so as to correct reciprocally, under that guidance, the results obtained by each. We see some approach already to this arrangement. Once established, there would be nothing to apprehend from any extent of division of employments. When we once have a class of learned men, at the disposal of all others, whose business it shall be to connect each new discovery with the general system, we may dismiss all fear of the great whole being lost sight of in the pursuit of the details of knowledge. The organization of scientific research will then be complete; and it will henceforth have occasion only to extend its development, and not to change its character. After all, the formation of such a new class as is proposed would be merely an extension of the principle that has created all the classes we have. While science was narrow, there was only one class: as it expanded, more were instituted. With a further advance a fresh need arises, and this new class will be the result.

The general spirit of a course of positive philosophy having been thus set forth, we must now glance at the chief advantages that may be derived, on behalf of human progression, from its study. Of these advantages, four may be especially pointed out.

1. The study of the positive philosophy affords the only rational means of exhibiting the logical laws of the human mind, which have hitherto been sought by unfit methods. To explain what is meant by this, we may refer to a saying of M. de Blainville, in his work on comparative anatomy, that every active, and especially every living, being may be regarded under two relations-the static and the dynamic; that is, under conditions or in action. It is clear that all considerations range themselves under the one or the other of these heads. Let us apply this classification to the intellectual functions.

If we regard these functions under their static aspect-that is, if we consider the conditions under which they exist-we must determine the organic circumstances of the case, which inquiry involves it with anatomy and physiology. If we look at the dynamic aspect, we have to study simply the exercise and results of the intellectual powers

of the human race, which is neither more nor less than the general object of the positive philosophy. In short, looking at all scientific theories as so many great logical facts, it is only by the thorough observation of these facts that we can arrive at the knowledge of logical laws. These being the only means of knowledge of intellectual phenomena, the illusory psychology, which is the last phase of theology, is excluded. It pretends to accomplish the discovery of the laws of the human mind by contemplating it in itself; that is, by separating it from causes and effects. Such an attempt, made in defiance of the physiological study of our intellectual organs, and of the observation of rational methods of procedure, cannot succeed at this time of day.

The positive philosophy, which has been rising since the time of Bacon, has now secured such a preponderance that the metaphysicians themselves profess to ground their pretended science on an observation of facts. They talk of external and internal facts, and say that their business is with the latter. This is much like saying that vision is explained by luminous objects' painting their images upon the retina. To this the physiologists reply that another eye would be needed to see the image. In the same manner, the mind may observe all phenomena but its own. It may be said that a man's intellect may observe his passions, the seat of the reason being somewhat apart from that of the emotions in the brain; but there can be nothing like scientific observation of the passions, except from without, as the stir of the emotions disturbs the observing faculties more or less. It is yet more out of the question to make an intellectual observation of intellectual processes. The observing and observed organ are here the same, and its action cannot be pure and natural. In order to observe, your intellect must pause from activity; yet it is this very activity that you want to observe. If you cannot effect the pause, you cannot observe; if you do effect it, there is nothing to observe. The results of such a method are in proportion to its absurdity. After two thousand years of psychological pursuit, no one proposition is established to the satisfaction of its followers. They are divided, to this day, into a multitude of schools, still disputing about the very elements of their doctrine. This interior observation gives birth to almost as many theories as there are observers. We ask in vain for any one discovery, great or small, that has been made under this method. The psychologists have done some good in keeping up the activity of our understandings, when there was no better work for our faculties to do; and they may have added something to our stock of knowledge. If they

NATURE AND IMPORTANCE OF THE POSITIVE PHILOSOPHY 81

have done so, it is by practicing the positive method-by observing the progress of the human mind in the light of science; that is, by ceasing, for the moment, to be psychologists.

The view just given in relation to logical science becomes yet more striking when we consider the logical art.

The positive method can be judged of only in action. It cannot be looked at by itself, apart from the work on which it is employed. At all events, such a contemplation would be only a dead study, which could produce nothing in the mind that loses time upon it. We may talk forever about the method, and state it in terms very wisely, with out knowing half so much about it as the man who has once put it in practice upon a single particular of actual research, even without any philosophical intention. Thus it is that psychologists, by dint of reading the precepts of Bacon and the discourses of Descartes, have mistaken their own dreams for science.

Without saying whether it will ever be possible to establish a priori a true method of investigation, independent of a philosophical study of the sciences, it is clear that the thing has never been done yet, and that we are not capable of doing it now. We cannot as yet explain the great logical procedures, apart from their applications. If we ever do, it will remain as necessary then as now to form good intellectual habits by studying the regular application of the scientific methods which we shall have attained.

This, then, is the first great result of the positive philosophy-the manifestation by experiment of the laws that rule the intellect in the investigation of truth and, as a consequence, the knowledge of the general rules suitable for that object.

2. The second effect of the positive philosophy, an effect not less important and far more urgently wanted, will be to regenerate education.

The best minds are agreed that our European education, still essentially theological, metaphysical, and literary, must be superseded by a positive training, conformable to our time and needs. Even the governments of our day have shared, where they have not originated, the attempts to establish positive instruction; and this is a striking indication of the prevalent sense of what is wanted. While encouraging such endeavors to the utmost, we must not, however, conceal from ourselves that everything yet done is inadequate to the object. The present exclusive specialty of our pursuits, and the consequent isolation of the sciences , spoil our teaching. If any student desires to form

an idea of natural philosophy as a whole, he is compelled to go through each department as it is now taught, as if he were to be only an astronomer, or only a chemist; so that, be his intelellect what it may, his training must remain very imperfect. And yet his object requires that he should obtain general positive conceptions of all the classes of natural phenomena. It is such an aggregate of conceptions, whether on a great or on a small scale, which must henceforth be the permanent basis of all human combinations. It will constitute the mind of future generations. In order for this regeneration of our intellectual system, it is necessary that the sciences, considered as branches from one trunk, should yield us, as a whole, their chief methods and their most important results. The specialities of science can be pursued by those whose vocation lies in that direction. They are indispensable, and they are not likely to be neglected; but they can never of themselves renovate ate our system of education, and, to be of their full use, they must rest upon the basis of that general instruction that is a direct result of the positive philosophy.

3. The same special study of scientific generalities must also aid the progress of the respective positive sciences: and this constitutes our third head of advantages.

The divisions that we establish between the sciences are, though not arbitrary, essentially artificial. The subject of our researches is one: we divide it for our convenience, in order to deal the more easily with its difficulties. But it sometimes happens -and especially with the most important doctrines of each science--that we need what we cannot obtain under the present isolation of the sciences-a combination of several special points of view; and for want of this, very important problems wait for their solution much longer than they otherwise need do. To go back into the past for an example: Descartes's grand conception with regard to analytical geometry is a discovery that has changed the whole aspect of mathematical science and yielded the germ of all future progress; and it issued from the union of two sciences that had always before been separately regarded and pursued. The case of pending questions is yet more impressive; as, for instance, in chemistry, the doctrine of definite proportions. Without entering upon the discussion of the fundamental principle of this theory, we may say with assurance that, in order to determine it-in order to determine whether it is a law of nature that atoms should necessarily combine in fixed numbers-it will be indispensable that the chemical point of view should be united with the physiologi-

NATURE AND IMPORTANCE OF THE POSITIVE PHILOSOPHY 83

cal. The failure of the theory with regard to organic bodies indicates that the cause of this immense exception must be investigated; and such an inquiry belongs as much to physiology as to chemistry. Again, it is as yet undecided whether azote is a simple or a compound body. It was concluded by almost all chemists that azote is a simple body; the illustrious Berzelius hesitated, on purely chemical considerations; but he was also influenced by the physiological observation that animals that receive no azote in their food have as much of it in their tissues as carnivorous animals. From this we see how physiology must unite with chemistry to inform us whether azote is simple or compound, and to institute a new series of researches upon the relation between the composition of living bodies and their mode of alimentation.

Such is the advantage which, in the third place, we shall owe to positive philosophy-the elucidation of the respective sciences by their combination. In the fourth place:

4. The positive philosophy offers the only solid basis for that social reorganization that must succeed the critical condition in which the most civilized nations are now living.

It cannot be necessary to prove to anybody who reads this work that ideas govern the world, or throw it into chaos-in other words, that all social mechanism rests upon opinions. The great political and moral crisis that societies are now undergoing is shown by a rigid analysis to arise out of intellectual anarchy. While stability in fundamental maxims is the first condition of genuine social order, we are suffering under an utter disagreement that may be called universal. Till a certain number of general ideas can be acknowledged as a rallying point of social doctrine, the nations will remain in a revolutionary state, whatever palliatives may be devised; and their institutions can be only provisional. But whenever the necessary agreement on first principles can be obtained, appropriate institutions will issue from them, without shock or resistance; for the causes of disorder will have been arrested by the mere fact of the agreement. It is in this direction that those must look who desire a natural and regular, a normal, state of society.

Now, the existing disorder is abundantly accounted for by the existence, all at once, of three incompatible philosophies--the theological, the metaphysical, and the positive. Any one of these might alone secure some sort of social order; but while the three coexist, it is impossible for us to understand one another upon any essential point

whatever. If this is true, we have only to ascertain which of the philosophies must, in the nature of things, prevail; and, this ascertained, every man, whatever may have been his former views, cannot but concur in its triumph. The problem once recognized cannot remain long unsolved; for all considerations whatever point to the positive philosophy as the one destined to prevail. It alone has been advancing during a course of centuries, throughout which the others have been declining. The fact is incontestable. Some may deplore it, but none can destroy it, nor therefore neglect it but under penalty of being betrayed by illusory speculations. This general revolution of the human mind is nearly accomplished. We have only to complete the positive philosophy by bringing social phenomena within its comprehension, and afterwards consolidating the whole into one body of homogeneous doctrine. The marked preference that almost all minds, from the highest to the commonest, accord to positive knowledge over vague and mystical conceptions is a pledge of what the reception of this philosophy will be when it has acquired the only quality that it now wants-a character of due generality. When it has become complete, its supremacy will take place spontaneously, and will re-establish order throughout society. There is, at present, no conflict but between the theological and the metaphysical philosophies. They are contending for the task of reorganizing society; but it is a work too mighty for either of them. The positive philosophy has hitherto intervened only to examine both, and both are abundantly discredited by the process. It is time now to be doing something more effective, without wasting our forces in needless controversy. It is time to complete the vast intellectual operation begun by Bacon, Descartes, and Galileo, by constructing the system of general ideas that must henceforth prevail among the human race. This is the way to put an end to the revolutionary crisis that is tormenting the civilized nations of the world.

Leaving these four points of advantage, we must attend to one precautionary reflection.

Because it is proposed to consolidate the whole of our acquired knowledge into one body of homogeneous doctrine, it must not be supposed that we are going to study this vast variety as proceeding from a single principle, and as subjected to a single law. There is something so chimerical in attempts at universal explanation by a single law that it may be as well to secure this work at once from any imputation of the kind, though its development will show how unde-

NATURE AND IMPORTANCE OF THE POSITIVE PHILOSOPHY 85

served such an imputation would be. Our intellectual resources are too narrow, and the universe is too complex, to leave any hope that it will ever be within our power to carry scientific perfection to its last degree of simplicity. Moreover, it appears as if the value of such an attainment, supposing it possible, were greatly overrated. The only way, for instance, in which we could achieve the business, would be by connecting all natural phenomena with the most general law we know-which is that of gravitation, by which astronomical phenomena are already connected with a portion of terrestrial physics. Laplace has indicated that chemical phenomena may be regarded as simple atomic effects of the Newtonian attraction, modified by the form and mutual position of the atoms. But supposing this view proveable (which it cannot be while we are without data about the constitution of bodies) , the difficulty of its application would doubtless be found so great that we must still maintain the existing division between astronomy and chemistry, with the difference that we now regard as natural that division that we should then call artificial. Laplace himself presented his idea only as a philosophic device, incapable of exercising any useful influence over the progress of chemical science. Moreover, supposing this insuperable difficulty overcome, we should be no nearer to scientific unity, since we then should still have to connect the whole of physiological phenomena with the same law, which certainly would not be the least difficult part of the enterprise.

Yet, all things considered, the hypothesis we have glanced at would be the most favorable to the desired unity.

The consideration of all phenomena as referable to a single origin is by no means necessary to the systematic formation of science, any more than to the realization of the great and happy consequences that we anticipate from the positive philosophy. The only necessary unity is that of method, which is already in great part established. As for the doctrine, it need not be one; it is enough that it should be homogeneous. It is, then, under the double aspect of unity of method and homogeneousness of doctrine that we shall consider the different classes of positive theories in this work. While pursuing the philosophical aim of all science, the lessening of the number of general laws requisite for the explanation of natural phenomena, we shall regard as presumptuous every attempt, in all future time, to reduce them rigorously to one.

Having thus endeavored to determine the spirit and influence of

the positive philosophy and to mark the goal of our labors, we have now to proceed to the exposition of the system-that is, to the determination of the universal, or encyclopedic, order, which must regulate the different classes of natural phenomena, and consequently the corresponding positive sciences.