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in various philosophies which have opposed to each other body and mind, theoretical knowledge and practice, physical mechanism and ideal purpose. Upon the philosophical side, these various dualisms culminate in a sharp demarcation of individual minds from the world, and hence from one another. While the connection of this philosophical position with educational procedure is not so obvious as is that of the points considered in the last three chapters, there are certain educational considerations which correspond to it; such as the antithesis supposed to exist between subject matter (the counterpart of the world) and method (the counterpart of mind); such as the tendency to treat interest as something purely private, without intrinsic connection with the material studied. Aside from incidental educational bearings, it will be shown in this chapter that the dualistic philosophy of mind and the world implies an erroneous conception of the relationship between knowledge and social interests, and between individuality or freedom, and social control and authority. The identification of the mind with the individual self and of the latter with a private psychic consciousness is comparatively modern. In both the Greek and medieval periods, the rule was to regard the individual as a channel through which a universal and divine intelligence operated. The individual was in no true sense the knower; the knower was the "Reason" which operated through him. The individual interfered at his peril, and only to the detriment of the truth. In the degree in which the individual rather than reason "knew," conceit, error, and opinion were substituted for true knowledge. In Greek life, observation was acute and alert; and thinking was free almost to the point of irresponsible speculations. Accordingly the consequences of the theory were only such as were consequent upon the lack of an experimental method. Without such a method individuals could not engage in knowing, and be checked up by the results of the inquiries of others. Without such liability to test by others, the minds of men could not be intellectually responsible; results were to be accepted because of their aesthetic consistency, agreeable quality, or the prestige of their authors. In the barbarian period, individuals were in a still more humble attitude to truth; important knowledge was supposed to be divinely revealed, and nothing remained for the minds of individuals except to work it over after it had been received on authority. Aside from the more consciously philosophic aspects of these movements, it never occurs to any one to identify mind and the personal self wherever beliefs are transmitted by custom.
In the medieval period there was a religious individualism. The deepest concern of life was the salvation of the individual soul. In the later Middle Ages, this latent individualism found conscious formulation in the nominalistic philosophies, which treated the structure of knowledge as something built up within the individual through his own acts, and mental states. With the rise of economic and political individualism after the sixteenth century, and with the development of Protestantism, the times were ripe for an emphasis upon the rights and duties of the individual in achieving knowledge for himself. This led to the view that knowledge is won wholly through personal and private experiences. As a consequence, mind, the source and possessor of knowledge, was thought of as wholly individual. Thus upon the educational side, we find educational reformers, like Montaigne, Bacon, Locke, henceforth vehemently denouncing all learning which is acquired on hearsay, and asserting that even if beliefs happen to be true, they do not constitute knowledge unless they have grown up in and been tested by personal experience. The reaction against authority in all spheres of life, and the intensity of the struggle, against great odds, for freedom of action and inquiry, led to such an emphasis upon personal observations and ideas as in effect to isolate mind, and set it apart from the world to be known.
This isolation is reflected in the great development of that branch of philosophy known as epistemology—the theory of knowledge. The identification of mind with the self, and the setting up of the self as something independent and self-sufficient, created such a gulf between the knowing mind and the world that it became a question how knowledge was possible at all. Given a subject—the knower—and an object—the thing to be known—wholly separate from one another, it is necessary to frame a theory to explain how they get into connection with each other so that valid knowledge may result. This problem, with the allied one of the possibility of the world acting upon the mind and the mind acting upon the world, became almost the exclusive preoccupation of philosophic thought.
The theories that we cannot know the world as it really is but only the impressions made upon the mind, or that there is no world beyond the individual mind, or that knowledge is only a certain association of the mind's own states, were products of this preoccupation. We are not directly concerned with their truth; but the fact that such desperate solutions were widely accepted is evidence of the extent to which mind had been set over the world of realities. The increasing use of the term "consciousness" as an equivalent for mind, in the supposition that there is an inner world of conscious states and processes, independent of any relationship to nature and society, an inner world more truly and immediately known than anything else, is evidence of the same fact. In short, practical individualism, or struggle for greater freedom of thought in action, was translated into philosophic subjectivism.
2. Individual Mind as the Agent of Reorganization. It should be obvious that this philosophic movement misconceived the significance of the practical movement. Instead of being its transcript, it was a perversion. Men were not actually engaged in the absurdity of striving to be free from connection with nature and one another. They were striving for greater freedom in nature and society. They wanted greater power to initiate changes in the world of things and fellow beings; greater scope of movement and consequently greater freedom in observations and ideas implied in movement. They wanted not isolation from the world, but a more intimate connection with it. They wanted to form their beliefs about it at first hand, instead of through tradition. They wanted closer union with their fellows so that they might influence one another more effectively and might combine their respective actions for mutual aims.
So far as their beliefs were concerned, they felt that a great deal which passed for knowledge was merely the accumulated opinions of the past, much of it absurd and its correct portions not understood when accepted on authority. Men must observe for themselves, and form their own theories and personally test them. Such a method was the only alternative to the imposition of dogma as truth, a procedure which reduced mind to the formal act of acquiescing in truth. Such is the meaning of what is sometimes called the substitution of inductive experimental methods of knowing for deductive. In some sense, men had always used an inductive method in dealing with their immediate practical concerns. Architecture, agriculture, manufacture, etc., had to be based upon observation of the activities of natural objects, and ideas about such affairs had to be checked, to some extent, by results. But even in such things there was an undue reliance upon mere custom, followed blindly rather than understandingly. And this observational-experimental method was restricted to these "practical" matters, and a sharp distinction maintained between practice and theoretical knowledge or truth. (See Ch. XX.) The rise of free cities, the development of travel, exploration, and commerce, the evolution of new methods of producing commodities and doing business, threw men definitely upon their own resources. The reformers of science like Galileo, Descartes, and their successors, carried analogous methods into ascertaining the facts about nature. An interest in discovery took the place of an interest in systematizing and "proving" received beliefs.
A just philosophic interpretation of these movements would, indeed, have emphasized the rights and responsibilities of the individual in gaining knowledge and personally testing beliefs, no matter by what authorities they were vouched for. But it would not have isolated the individual from the world, and consequently isolated individuals—in theory—from one another. It would have perceived that such disconnection, such rupture of continuity, denied in advance the possibility of success in their endeavors. As matter of fact every individual has grown up, and always must grow up, in a social medium. His responses grow intelligent, or gain meaning, simply because he lives and acts in a medium of accepted meanings and values. (See ante, p. 30.) Through social intercourse, through sharing in the activities embodying beliefs, he gradually acquires a mind of his own. The conception of mind as a purely isolated possession of the self is at the very antipodes of the truth. The self achieves mind in the degree in which knowledge of things is incarnate in the life about him; the self is not a separate mind building up knowledge anew on its own account.
Yet there is a valid distinction between knowledge which is objective and impersonal, and thinking which is subjective