What makes emancipation from such notions peculiarly difficult in sociology is that sentiment so often intervenes. We enthuse over our political and religious beliefs and moral practices very differently from the way we do over the objects of the physical world. Consequently this emotional quality is transmitted to the way in which we conceive and explain our beliefs. The ideas that we form about them are deeply felt, just as are their purposes, thereby taking on such authority that they brook no contradiction. Any opinion which is embarrassing is treated as hostile. For example, a proposition may not accord with our view of patriotism or personal dignity. If is therefore denied, whatever may be the proofs advanced. We cannot allow it to be true. It is rejected, and our strong emotions, seeking a justification for so doing, have no difficulty in suggesting reasons which we find readily conclusive. These notions may even be so prestigious that they will not tolerate scientific examination. The mere fact of subjecting them, as well as the phenomena they express, to cold, dry analysis is repugnant to certain minds. The sociologist who undertakes to study morality objectively as an external reality seems to such sensitive souls bereft of moral sense, just as the vivisectionist seems to the ordinary person devoid of normal feelings. Far from admitting that these sentiments are subject to science, it is believed that it is to them one should address on[e]self in order to construct the science of things to which they relate. ‘Woe’, writes an eloquent historian of religions, ‘Woe to the scientist who approaches the things of God without having in the depths of his consciousness, in the innermost indestructible parts of his being, in which sleep the souls of his ancestors, an unknown sanctuary from which at times there arises the fragrance of incense, a verse of a psalm, a cry of sorrow or triumph that as a child, following his brothers’ example, he raised to heaven, and which suddenly joins him once again in communion with the prophets of yore!’3
One cannot protest too strongly against this mystical doctrine which – like all mysticism, moreover – is in essence only a disguised empiricism, the negation of all science. Feelings relating to social things enjoy no pride of place over other sentiments, for they have no different origin. They too have been shaped through history. They are a product of human experience, albeit one confused and unorganised. They are not due to some transcendental precognition of reality, but are the result of all kinds of disordered impressions and emotions accumulated through chance circumstance, lacking systematic interpretation. Far from bringing enlightenment of a higher order than the rational, they are composed exclusively of states of mind which, it is true, are strong but also confused. To grant them such a predominant role is to ascribe to the lower faculties of the intelligence supremacy over superior ones and to condemn oneself more or less to a rhetorical logomachy. A science constituted in this way can only satisfy those minds who prefer to think with their sensibility rather than their understanding, who prefer the immediate and confused syntheses of sensation to the patient, illuminating analyses of the reason. Feeling is an object for scientific study, not the criterion of scientific truth. But there is no science which at its beginnings has not encountered similar resistances. There was a time when those feelings relating to the things of the physical world, since they also possessed a religious or moral character, opposed no less violently the establishment of the physical sciences. Thus one can believe that, rooted out from one science after another, this prejudice will finally disappear from sociology as well, its last refuge, and leave the field clear for the scientist.
(2) But the above rule is entirely negative. It teaches the sociologist to escape from the dominance of commonly held notions and to direct his attention to the facts, but does not state how he is to grasp the facts in order to study them objectively.
Every scientific investigation concerns a specific group of phenomena which are subsumed under the same definition. The sociologist’s first step must therefore be to define the things he treats, so that we may know – he as well – exactly what his subject matter is. This is the prime and absolutely indispensable condition of any proof or verification. A theory can only be checked if we know how to recognise the facts for which it must account. Moreover, since this initial definition determines the subject matter itself of the science, that subject matter will either consist of a thing or not, according to how this definition is formulated.
To be objective the definition clearly must express the phenomena as a function, not of an idea of the mind, but of their inherent properties. It must characterise them according to some integrating element in their nature and not according to whether they conform to some more or less ideal notion. When research is only just beginning and the facts have not yet been submitted to any analysis, their sole ascertainable characteristics are those sufficiently external to be immediately apparent. Those less apparent are doubtless more essential. Their explanatory value is greater, but they remain unknown at this stage of scientific knowledge and cannot be visualised save by substituting for reality some conception of the mind. Thus it is among the first group of visible characteristics that must be sought the elements for this basic definition. Yet it is clear that the definition will have to include, without exception or distinction, all the phenomena which equally manifest these same characteristics, for we have no reason nor the means to discriminate between them. These properties, then, are all that we know of reality. Consequently they must determine absolutely how the facts should be classified. We possess no other criterion which can even partially invalidate the effect of this rule. Hence the following rule: The subject matter of research must only include a group of phenomena defined beforehand by certain common external characteristics and all phenomena which correspond to this definition must be so included. For example, we observe that certain actions exist which all possess the one external characteristic that, once they have taken place, they provoke on the part of society that special reaction known as punishment. We constitute them as a group sui generis and classify them under a single heading: any action that is punished is termed a crime and we make crime, so defined, the subject matter of a special science of criminology. Likewise we observe within all known societies the existence of a smaller society outwardly recognisable because it is formed for the most part of individuals linked by a blood relationship and joined to each other by legal ties. From the relevant facts we constitute a special group to which we assign a distinctive name: phenomena of domestic life. We term every aggregate of this kind a family and make the family, so defined, the subject matter of a specific investigation which has not yet received a special designation in sociological terminology. When we later pass on from the family in general to the different types of family, the same rule should be applied. For example, embarking upon a study of the clan, or the maternal or patriarchal family, we should begin by defining them according to the same method. The subject matter of each topic, whether general or specialised, should be constituted according to the same principle.
By proceeding in this way from the outset the sociologist is immediately grounded firmly in reality. Indeed, how the facts are classified does not depend on him, or on his own particular cast of mind, but on the nature of things. The criterion which determines whether they are to be grouped in a particular category can be demonstrated and generally accepted by everybody, and the observer’s statements can be verified by others. It is true that a notion built up in this way does not always chime – or does not generally even chime at all – with the notion commonly