The significance of this text in Ethics lies in its effort to awaken a vital conviction of the genuine reality of moral problems and the value of reflective thought in dealing with them. To this purpose are subordinated the presentation in Part I. of historic material; the discussion in Part II. of the different types of theoretical interpretation, and the consideration, in Part III., of some typical social and economic problems which characterize the present.

Experience shows that the student of morals has difficulty in getting the field objectively and definitely before him so that its problems strike him as real problems. Conduct is so intimate that it is not easy to analyze. It is so important that to a large extent the perspective for regarding it has been unconsciously fixed by early training. The historical method of approach has proved in the classroom experience of the authors an effective method of meeting these difficulties. To follow the moral life through typical epochs of its development enables students to realize what is involved in their own habitual standpoints; it also presents a concrete body of subject-matter which serves as material of analysis and discussion.

The classic conceptions of moral theory are of remarkable importance in illuminating the obscure places of the moral life and in giving the student clues which will enable him to explore it for himself. But there is always danger of either dogmatism or a sense of unreality when students are introduced abruptly to the theoretical ideas. Instead of serving as tools for understanding the moral facts, the ideas are likely to become substitutes for the facts. When they are proffered ready-made, their theoretical acuteness and cleverness may be admired, but their practical soundness and applicability are suspected. The historical introduction permits the student to be present, as it were, at the social situations in which the intellectual instruments were forged. He appreciates their relevancy to the conditions which provoked them, and he is encouraged to try them on simple problems before attempting the complex problems of the present. By assisting in their gradual development he gains confidence in the ideas and in his power to use them.

In the second part, devoted more specifically to the analysis and criticism of the leading conceptions of moral theory, the aim accordingly has not been to instill the notions of a school nor to inculcate a ready-made system, but to show the development of theories out of the problems and experience of every-day conduct, and to suggest how these theories may be fruitfully applied in practical exigencies. Aspects of the moral life have been so thoroughly examined that it is possible to present certain principles in the confidence that they will meet general acceptance. Rationalism and hedonism, for example, have contributed toward a scientific statement of the elements of conduct, even though they have failed as self-inclosed and final systems. After the discussions of Kant and Mill, Sidgwick and Green, Martineau and Spencer, it is possible to affirm that there is a place in the moral life for reason and a place for happiness,—a place for duty and a place for valuation. Theories are treated not as incompatible rival systems which must be accepted or rejected en bloc, but as more or less adequate methods of surveying the problems of conduct. This mode of approach facilitates the scientific estimation and determination of the part played by various factors in the complexity of moral life. The student is put in a position to judge the problems of conduct for himself. This emancipation and enlightenment of individual judgment is the chief aim of the theoretical portion.

In a considerable part of the field, particularly in the political and economic portions of Part III., no definitive treatment is as yet possible. Nevertheless, it is highly desirable to introduce the student to the examination of these unsettled questions. When the whole civilized world is giving its energies to the meaning and value of justice and democracy, it is intolerably academic that those interested in ethics should have to be content with conceptions already worked out, which therefore relate to what is least doubtful in conduct rather than to questions now urgent. Moreover, the advantages of considering theory and practice in direct relation to each other are mutual. On the one hand, as against the a priori claims of both individualism and socialism, the need of the hour seems to us to be the application of methods of more deliberate analysis and experiment. The extreme conservative may deprecate any scrutiny of the present order; the ardent radical may be impatient of the critical and seemingly tardy processes of the investigator; but those who have considered well the conquest which man is making of the world of nature cannot forbear the conviction that the cruder method of trial and error and the time-honored method of prejudice and partisan controversy need not longer completely dominate the regulation of the life of society. They hope for a larger application of the scientific method to the problems of human welfare and progress. Conversely, a science which takes part in the actual work of promoting moral order and moral progress must receive a valuable reflex influence of stimulus and of test. To consider morality in the making as well as to dwell upon values already established should make the science more vital. And whatever the effect upon the subject-matter, the student can hardly appreciate the full force of his materials and methods as long as they are kept aloof from the questions which are occupying the minds of his contemporaries.

Teachers who are limited in time will doubtless prefer to make their own selections of material, but the following suggestions present one possible line of choice. In Part I., of the three chapters dealing with the Hebrew, Greek, and modern developments, any one may be taken as furnishing an illustration of the method; and certain portions of Chapter IX. may be found more detailed in analysis than is necessary for the beginner. In Part II., Chapters XI.-XII. may be omitted without losing the thread of the argument. In Part III., any one of the specific topics—viz., the political state, the economic order, the family—may be considered apart from the others. Some teachers may prefer to take Parts in their entirety. In this case, any two may be chosen.

As to the respective shares of the work for which the authors are severally responsible, while each has contributed suggestions and criticisms to the work of the other in sufficient degree to make the book throughout a joint work, Part I. has been written by Mr. Tufts, Part II. by Mr. Dewey, and in Part III., Chapters XX. and XXI. are by Mr. Dewey, Chapters XXII.-XXVI. by Mr. Tufts.

It need scarcely be said that no attempt has been made in the bibliographies to be exhaustive. When the dates of publication of the work cited are given, the plan has been in general to give, in the case of current literature, the date of the latest edition, and in the case of some classical treatises the date of original publication.

In conclusion, the authors desire to express their indebtedness to their colleagues and friends Dr. Wright, Mr. Talbert, and Mr. Eastman, who have aided in the reading of the proof and with other suggestions.