While we have dealt here with the extremes of extrospection and introspection, it is safe to say that in the vast majority of people there is a definite and unassailable interest in both of these directions. Interest in others is not altruism and interest in the self is not self-interest or egoism. But, on the whole, they who are not interested in others never become philanthropists; they who are not interested in things never become savants; and they who do not dig deep into themselves are not philosophers. There are, therefore, certain practical aspects to the study of interest which are essential parts of the knowledge of character.
1. Is the interest of the one studied controlled by some purpose or purposes, or is it diffuse, involuntary, not well directed?
2. Is it narrow, so that it excludes the greater part of the world, or is it easily evoked by a multiplicity of things? In the breadth of interest is contained the breadth of character, but not necessarily its intensity or efficiency. There are people of narrow but intense successful interest, and others of broad, intense successful interest, but one meets, too frequently, people quickly interested in anything, but not for long or in a practical fashion. There is a certain high type of failure that has this difficulty.
3. Is its main trend outward, and if so, is there some special feature or features of the world that excite interest?
4. Is its main trend inward, and is he interested in emotions, thoughts, sensations,--In his mind or his body, in ideas or in feelings? For it is obvious that the man interested in his ideas is quite a different person than he who is keenly aware of his emotions, and that the hypochondriac belongs in a class by himself.
5. If there are special interests, how do these harmonize with ability and with well-defined plan and purpose. It is not sufficient to be keenly interested, though that is necessary. One of the greatest disharmonies of life is when a man is interested when he is not proficient, though usually proficiency develops interest because it gives superiority and achievement.
Interest is heightened by the success of others, for we are naturally competitive creatures, or by admiration for those successful in any line of activity. The desire to emulate or excel or to get power is a mighty factor in the maintenance of interest. "See how nicely Georgie does it," is a formula for both children and adults, and if omitted, interest would not be easily aroused or maintained. In other words, the competitive feeling and desire in its largest sense are necessary for the concentrated excitement of interest. So any scheme of social organization that proposes to do away with competition and desire for superiority labors under the psychological handicap of removing the basis of much of the interest in work and study and must find some substitute for the lacking incentives before it can seriously ask for the adherence of those with a realistic view of human nature. One might, it is true, establish traditions of work, bring about a livelier social conscience as to service, but these are not sufficient to arouse real interest in the vast majority of the race. Here and there one finds a man in whom interest is aroused by the unsolved problem, by the reward of fame and the pleasure of achievement, but such persons are rare.
The average man (and woman), in my experience, loses interest in anything that does not directly benefit him or in which his personal competitive feeling is not aroused. Interest becomes vague and ill-defined the farther the matter concerned is from the direct personal good of the individual, and proportionately it becomes difficult to sustain it.
That is why in our day "dollars and cents" appeals to interest are made; away with abstracts, away with sentiment; the publicity man working for a good cause now uses the methods of the man selling shoes or automobiles: he attempts to show that one's interest and cooperation are demanded and necessary because one's direct personal welfare is involved. Whether or not ethically justifiable, it is a recognition of the fact that interest is aroused and sustained, for the majority, by some direct personal involvement.
Thus in education, a fact to be learned, or a subject to be studied, should be first sketched or placed in some use value to the student. Knowledge for knowledge's sake is appealing only to the rare scholar, he who palpitates with interest over the relationship of things to one another, he who seeks to discover values. Now and then one finds such a person, one thrown into sustained excitement by learning, but the great majority of students, whether in medicine, law or mathematics, are "practical," meaning that their interests are relatively narrow and the good they seek an immediate one to be reaped by themselves. Recognizing this fact in the abstract, the most of teaching is conducted on the plane of the real scholar, and the average student is left to find values for himself. From first to last in teaching I would emphasize usevalue; true, I would seek to broaden the conception of usevalue, so that a student would see that usefulness is a social value, but no matter how abstract and remote the subject, its relationship to usefulness would be preliminary and continuously emphasized in order to sustain interest.