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290 at work at this double adjustment, and from them as well as from psychologists and students of education we may look for progress and reform.

For scientific study of method, whether by experiment in the psychological laboratory, by classroom test, or by exact statistical record, can but provide the basis for constructive reorganization of teaching in any subject; discussion of aims by educational leaders can but define in general terms a new interpretation of material; the teachers in the schools must make effective or prove visionary the ideals thus achieved. If they cling to traditional conceptions and tried methods—as many do, especially in private schools—they block progress; and if by personal worth and the power of leadership they win respect and affect deeply the lives of their pupils, the weight of their conservatism is the harder to bear. But the hasty and ill-considered application of scientific generalization or social conception is an equal if a rarer fault. The teacher must master for himself the science and the philosophy of his subject and be critical practitioner as well. He must be open-minded, critical, constructive.

(c) IN THE COLLEGE

This attitude is more general among teachers and principals of elementary schools and among school superintendents than among teachers and masters of secondary schools; among public secondary-school teachers than among private secondary-school teachers; and least general among college teachers. Yet to these latter the call to professional study of the problems of their own work is loudest. They have greatest need to test their results and possibly revise their methods, to reconceive their aims and discover new ways to achieve them. In America the college stands perforce for culture; yet it clears itself with difficulty from the snares of technical specialization in chosen fields of knowledge—a specialization essentially vocational. College professors must be specialists—scholars in the full sense of the term; but college students do not for their part commonly intend or care to specialize in the same sense. To study one field with greater thoroughness than others; to gain from it a disinterested enthusiasm for learning; to approach in one direction the limits of achieved knowledge; to taste the joy of constructive intellectual