Introduction to the Science of Sociology

by Robert Ezra Park; E. W. Burgess

But man gained his pre-eminent position among the animals mainly through his ability to form co-operative groups working to common ends; and long before the times of which anthropological research give us any clear knowledge, man had turned his individualistic fighting instincts to the service of his group or clan. That is to say, he had become a warrior, giving his best strength to co-operative aggression in behalf of satisfactions that could not be won by him as an individual acting for himself.

Our earlier studies have taught us also that if man's instinctive tendencies could in any manner be inhibited or modified, so that he came to display other characteristics than those observed in the present expression of these inborn instincts, then the law of his nature would in that very fact be changed. We are thus led to ask whether the biologist finds evidence that an animal's instincts can be thus changed in mode of expression.

The biologist speaks to us somewhat as follows. Although new racial characteristics have very rarely, if ever, been gained by the obliteration of instincts, changes in racial characteristics have not infrequently occurred as the result of the control, rather than the loss, of these inherited instincts.

This control may become effective in either one of two ways: first, by the thwarting or inhibition of the expression of the instincts; or secondly, by the turning of its expression to other uses than that which originally resulted in its fixation.

As an example of the thwarting of the expression of an instinct we may take the functioning of the sexual instinct, which, as we see it in animals in general, has been inhibited in the human animal by the habits acquired by man as he has risen in the scale.

This mode of change—that of the mere chaining of the instinctive tendency—is subject to one great difficulty. The chain may by chance be broken; the inhibition may be removed; then the natural instinctive tendency at once shows itself. Remove the restraints of civilized society but a little, and manifestations of the sexual instinct of our race appear in forms that are not far removed from those observed in the animal. Place a man under conditions of starvation and he shows himself as greedy as the dog.

The second mode of change—that of the transference of functioning of the instincts into new channels—meets this special difficulty, for it does not depend upon the chaining of the instinct. It actually makes use of the instinct. And the more important to the race the newer reference of the instinct's functioning turns out to be, the more certain is it to replace the original reference. If the new mode of functioning brings marked advantage that is lost by reversion to the earlier manifestation of the instinct, so that such a reversion to this earlier manifestation is a detriment to the race, then the change is likely to become a permanent one.

No better example of this second mode of change of an instinct's functioning can be found than in the very existence of war itself. The basic instinct is one that led the savage man to fight to protect himself or to gain something for himself by aggressive attack. War has come into being as the result of a transfer of the functioning of this instinct, which at first had only an individualistic reference, so that it has come to have a clan or national reference. The early man found he could not have success as an individual unless he joined with his fellow-men in defense and aggression; and that meant war.

And note that this transfer of reference of the expression of this fighting instinct soon became so important to the race that reversion to its primal individualistic reference had to be inhibited. Aggressive attack by an individual upon another of his own clan or nation necessarily tended to weaken the social unit and to reduce its strength in its protective and aggressive wars; and thus such attacks by individuals came to be discountenanced and finally in large measure repressed.

Here, it will be observed, the fighting instinct of the individual has not been obliterated; it has not even been bound with chains; but its modes of expression have been altered to have racial significance, and to have so great a significance in this new relation that reversion to its primary form of expression has become a serious obstacle to racial advance.