It has now to be noticed how complexity of organisation is hindered by reproductive activity and conversely. The hydra"s power to produce young ones from nearly all parts of its body is due to the comparative h.o.m.ogeneity of its body, while it is not improbable that the smallness of human fertility, compared with the fertility of large feline animals, is due to the greater complexity of the human organisation--more especially the organisation of the nervous system.
Of the inverse variation between activity and genesis we have examples in the contrast between the fertility of birds and the fertility of mammals. Comparing the large with the large and the small with the small, we see that creatures which continually go through the muscular exertion of sustaining themselves in the air and propelling themselves rapidly through it are less prolific than creatures of equal weights which go through the smaller exertion of moving about over solid surfaces. The extreme infertility of the bat is most striking when compared with the structurally similar but very prolific mouse; a difference in the rate of multiplication which may fairly be ascribed to the difference in the rate of expenditure.
_Interpretation and Qualification_
Derived as the self-sustaining and waste-sustaining forces are from a common stock of force, it necessarily happens that, other things being equal, increase of the one involves decrease of the other. It may therefore be set down as a law that every higher degree of organic evolution has for its concomitant a lower degree of the peculiar organic dissolution which is seen in the production of new organisms.
How is the ratio between individuation and genesis established in each case? All specialties of the reproductive process are due to the natural selection of favourable variations. Given a certain surplus available for race preservation, and it is clear that by indirect equilibration only can there be established that peculiar distribution of this surplus which is seen in each case.
Here a qualification must be made. Recognising the truth that every increase of evolution which is appropriate to the circ.u.mstances of an organism brings an advantage somewhat in excess of its cost, the general law, more strictly stated, is that genesis decreases not quite so fast as individuation increases. The result of greater individuation--whether it takes the form of greater strength or higher speed, facilitates some habitual movement or utilises better the absorbed aliment--is a greater surplus of vital capital; part of which goes to the aggrandis.e.m.e.nt of the individual and part to the formation of new individuals. Hence every type that is best adapted to its conditions has a rate of multiplication that insures a tendency to predominate. Survival of the fittest, acting alone, is ever replacing inferior species by superior species. But beyond the longer survival, and therefore greater chance of leaving offspring, which superiority gives, we see here another way in which the spread of the superior is insured. Though the more evolved organism is the less fertile absolutely, it is the more fertile relatively.
_Multiplication of the Human Race_
What causes increase or decrease of genesis in other creatures causes increase or decrease of genesis in man. It is true that, even more than hitherto, our reasonings are here beset with difficulties. So numerous are the inequalities in the conditions that but few un.o.bjectionable comparisons can be made. The human races differ not only in their sizes and foods, and in the climates they inhabit, but also their expenditures in bodily and mental action are extremely unequal.
The increase of fertility caused by nutrition that is greatly in excess of expenditure is to be detected by comparing populations of the same race or of allied races one of which obtains good and abundant sustenance much more easily than the other. On carrying out such comparisons it is seen that in the human race, as in all other races, such absolute or relative abundance of nutriment as leaves a large excess after defraying the cost of carrying on parental life, is accompanied by a high rate of genesis.
It is also apparent that relative increase of expenditure, leaving a diminished surplus, reduces fertility. That infertility is generally produced in women by mental labour carried to excess is shown in the fact that most of the flat-chested girls who survive their high-pressure education are incompetent to bear a well-developed infant and to supply it with the natural food for the natural period. It is a matter of common remark how frequently men of unusual mental activity leave no offspring.
It is likely to be urged that since the civilised races are on the average larger than many of the uncivilised races, and since they are also somewhat more complex as well as more active, they ought, in accordance with the alleged general law, and other things being equal, to be less prolific. But other things are not equal; and it is to the inequality of the other things that this apparent anomaly is attributable.
One more objection has to be met. Cases may be named of men conspicuous for activity, bodily and mental, who were also noted, not for less generative power than usual, but for more. The cases are a.n.a.logous to some before-named in which more abundant food simultaneously aggrandises the individual and adds to the production of new individuals--the differences between cases being that instead of a better external supply of material there is a better internal utilisation of materials. Some peculiarity of organic balance, some potency of the digestive juices, gives to the system a perpetual high tide of rich blood that serves at once to enhance the vital activities and to raise the power of propagation. The _proportion_ between individuation and genesis remains the same: both are increased by the increase of the common stock of materials.
_Human Population in the Future_
Any further evolution in the most highly-evolved of terrestrial beings--man--must be of the same nature as evolution in general. It must be an advance towards completion of that continuous adjustment of internal to external relations which was shown to const.i.tute life.
Looking at the several possibilities, and asking what direction this further evolution, this more complete moving equilibrium, this better adjustment of inner to outer relations, this more perfect co-ordination of action is likely to take:--the conclusion is that it must take mainly the direction of a higher intellectual and emotional development. There is abundant scope for development in ascertaining the conditions of existence to which we must conform; and in acquiring a greater power of self-regulation.
What are those changes in the environment to which, by direct or indirect equilibration the human organism has been adjusting itself, is adjusting itself now, and will continue to adjust itself? And how do they necessitate a higher evolution of the organism? In all cases pressure of population is the original cause. Were it not for the compet.i.tion this entails, so much thought and energy would not be spent on the business of life; and growth of mental power would not take place. Difficulty in getting a living is alike the incentive to a higher education of children, and to a more intense and long-continued application in adults. Nothing but necessity could make men submit to this discipline; and nothing but this discipline could produce a continued progression.
Excess of fertility is then the cause of man"s further evolution. And the obvious corollary is that man"s further evolution itself necessitates a decline in his fertility. The further progress of civilisation will be accompanied by an enhanced cost of individuation: whether it be in greater growth of the organs which subserve self-maintenance, in their added complexity of structure, or in their higher activity, the abstraction of the required material, implies a diminished reserve of materials for race maintenance. This greater emotional and intellectual development does not necessarily mean a mentally laborious life--for, as the goal becomes organic, it will become spontaneous and pleasurable.
The necessary antagonism of individuation and genesis not only fulfils the _a priori_ law of maintenance of the race from the monad up to man, but insures final attainment of the highest form of this maintenance--a form in which the amount of life shall be the greatest possible and the births and deaths as few as possible. From the beginning pressure of population has been the proximate cause of progress. After having duly stocked the globe with inhabitants; raised all its habitable parts into the highest state of culture; brought all processes for the satisfaction of human wants to perfection; developed the intellect into complete competency for its work, and the feelings into complete fitness for social life; the pressure of population as it gradually finished its work, must gradually bring itself to an end.
Changes, numerical, social, organic, must by their mutual influences work unceasingly towards a state of harmony--a state in which each of the factors is just equal to its work. And this highest conceivable result must be wrought out by the same universal process which the simplest inorganic action ill.u.s.trates.
Principles of Sociology
"Principles of Sociology" was published in four parts from 1876 to 1880. It forms part of a connected series. In "First Principles"
inorganic evolution--that of the stars and of the solar system--was outlined; organic evolution was dealt with in "Principles of Biology;" and in the present treatise, "Principles of Sociology,"
we approach super-organic evolution, and are introduced to the science of society under its Comtist t.i.tle "Sociology."
Super-organic evolution may be marked off from, organic by taking it to include all those processes and products which imply the co-ordinated action of many individuals. Commencing with the development of the family, sociology has next to describe and explain the rise and development of political organisation; the evolution of the ecclesiastical structures and functions; the control embodied in ceremonial observances; and the relations between the regulative and operative divisions of every society.
_I.--Domestic_
That evolution decreases the sacrifice of individual life to the life of the species, we may see on glancing upwards from the microscopic protozoa, where the brief parental life disappears absolutely in the lives of the progeny, to the mammalia, where the greatest conciliation of the interests of the species, the parents and the young, is displayed. The highest const.i.tution of the family is reached where there is such conciliation between the needs of the society and those of its members, old and young, that the mortality between birth and the reproductive age falls to a minimum, while the lives of adults have their subordination to the rearing of children reduced to the smallest possible. The diminution of this subordination takes place in three ways: First, by elongation of that period which precedes reproduction; second, by fewer offspring born, as well as by increase of the pleasure taken in the care of them; and third, by lengthening of the life which follows cessation of reproduction. Let us bear in mind that the domestic relations which are ethically the highest, are also biologically and sociologically the highest.
MARRIAGE
The propriety of setting out with the foregoing purely natural-history view will be evident upon learning that among low savages the relations of the s.e.xes are substantially like those common among inferior creatures. The effect of promiscuity, however, being to hinder social evolution, wherever it was accompanied by unions having some duration, the product of such unions were likely to be superior to others, and from this primitive stage domestic evolution takes place in several directions by increase of coherence and definiteness.
From promiscuity we pa.s.s to that form of polyandry in which the unrelated husbands have but one wife; thence to the form in which the husbands are related; and finally to the form in which they are brothers only, as in the fraternal polyandry of the ancient Britons. It is almost needless to point out that, as in pa.s.sing from promiscuity to polyandry the domestic relations become more coherent and definite, so do they in pa.s.sing from the lower forms of polyandry to the higher. That polygyny is better than polyandry may be concluded from its effects. It conduces in a higher degree to social self-preservation than the inferioi types of marital relations by making possible more rapid replacement of men lost in war, and so increases the chance of social survival. By establishment of descent in the male line it conduces to political stability; and, by making possible a developed form of ancestor-worship, it consolidates society.
MONOGAMY
Societies which from generation to generation produce in due abundance individuals who relatively to the requirements are the best physically, morally, and intellectually, must become the predominant societies, and must tend through the quiet process of industrial compet.i.tion to replace other societies. Consequently, marital relations which favour this result in the highest degree must spread; while the prevailing sentiments and ideas must become so moulded into harmony with them that other relations will be condemned as immoral. The monogamic form of the s.e.xual relations is manifestly the ultimate form; and any changes to be antic.i.p.ated must be in the direction of completion and extension of it.
_II.--Political Organisation_
A society is formed only when, besides juxtaposition there is co-operation. Co-operation is made possible by society and makes society possible. It pre-supposes a.s.sociative men; and men remain a.s.sociated only because of the benefits co-operation yields them. But there cannot be concerted actions without agencies by which actions are adjusted in their times, amounts, and kinds; and the actions cannot be of different kinds without the co-operators undertaking different duties. That is to say, the co-operators must become organised, either voluntarily or involuntarily.
AGGREGATION
The political evolution manifested by increase of ma.s.s is political aggregation. One of the laws of evolution at large is that integration results when like units are subject to the same force or the like forces; and from the first stages of political integration to the last this law is ill.u.s.trated. Likeness in the units forming a social group being one conditioned to their integration, a further condition is their joint reaction against external action: co-operation in war is the chief cause of social integration. The temporary unions of savages for offence and defence show the initiatory steps. When many tribes unite against a common enemy, long continuance of their combined action makes them coherent under some common control. And so it is subsequently with still larger aggregates.
DIFFERENTIATION
The state of h.o.m.ogeneity in the social aggregate is an unstable one. The primary political differentiation originates from the primary family differentiation. Men and women very early respectively form the two political cla.s.ses of rulers and ruled. The slave cla.s.s acquires separateness only as fast as there arrives some restrictions on the powers of the owners; slaves begin to form a division of the body politic when their personal claims begin to be distinguished as limiting the claims of their masters. Where men have pa.s.sed into the agricultural or settled state it becomes possible for one community to take possession bodily of another community, along with the territory it occupies. When this happens, there arise additional cla.s.s divisions. The cla.s.s differentiation of which militancy is the actual cause is furthered by the establishment of definite descent, especially male descent, and by the transmission of position and property to the eldest son of the eldest continually. Inequalities of position and wealth once initiated tend to increase and to establish physical differences; and beyond these there are produced by the respective habits of life mental differences, emotional and intellectual, strengthening the general contrast of nature. When there come conquests which produce compound societies and doubly compound ones there result superpositions of ranks: while the ranks of the conquering society become respectively higher than those which have existed before, the ranks of the conquered society become respectively lower. The political differentiations which militancy originates and which for a long time increase in definiteness, are at later stages and under other conditions interfered with, traversed, and partially or wholly destroyed. While the higher political evolution of large social aggregates tends to break down the divisions of rank which grew up in the small component social aggregates, by subst.i.tuting other divisions, these original divisions are still more broken down by growing industrialism. Generating a wealth that is not connected with rank, this initiates a compelling power; and at the same time, by establishing the equal positions of citizens before the law in respect of trading transactions, it weakens those divisions which at the outset expressed inequality of position before the law.
POLITICAL FORMS AND FORCES
In its primitive form political power is the feeling of the community acting through an agency which it has either informally or formally established; and this public feeling, while it is to some extent the feeling spontaneously formed by those concerned, it is to a much larger extent the acc.u.mulated and organised sentiment of the past. Everywhere we are shown that the ruler"s function as regulator is mainly that of enforcing the inherited rules of conduct which embody ancestral sentiments and ideas.
CHIEFS AND KINGS
At the outset the principle of efficiency was the sole principle of organisation, but evidently supremacy which depends exclusively on personal attributes is but transitory. Only when the chief"s place is forthwith filled by one whose claim is admitted does there begin a differentiation which survives through successive generations. The custom of reckoning descent through females, it may be noted, is less favourable to the establishment of permanent political headship than is the system of kinship through males, which conduces to a more coherent family, to a greater culture of subordination and to a more probable union of inherited position and inherited capacity. In sundry semi-civilised societies distinguished by permanent political headships, inheritance through males has been established in the ruling house while inheritance through females survives in the society at large. Descent through males also fosters ancestor-worship, and the consequent reinforcing of natural authority by supernatural authority--a very powerful factor. Development of the ghost theory, leading as it does to special fear of the ghosts of powerful men, until, where many tribes have been welded together by a conqueror, his ghost acquires in tradition the pre-eminence of a G.o.d, produces two effects. In the first place his descendant is supposed to partake of his divine nature; and in the second place, by propitiatory sacrifices to him is supposed to obtain his aid.
From the evolution-standpoint we are enabled to discern the relative beneficence of inst.i.tutions which, considered absolutely, are not beneficent; and we are taught to approve as temporary that which as permanent we abhor. The evidence shows that subjection to despots has been largely instrumental in advancing civilised life.
COMPOUND POLITICAL HEADS