Works by WILLIAM JAMES, M.D., Ph. et Litt.D., LL.D.: Correspondent sf the Institute of France; The Principles of Psychology. 2 vols. 8vo, $4.80, net. New York: Henry Holt & Co. 1890. Psychology: Briefer Course. 12mo. $1.60, net. New York: Henry Holt & Co. 1892. The Will to Believe, and Other Essays in Popular Philosophy. 12mo. $2.00. New York: Longmans, Green & Co. 1897. Is Life Worth Living? 18mo. 50 cents, net. Philadelphia S. B. Weston, 1305 Arch Street. 1896. Human Immortality: Two Supposed Objections to the Doctrine. 16mo. $1.00. Boston: Houghton, Mifflin & Co. 1898. Talks to Teachers on Psychology: and to Students on Some of Life's Ideals. 12mo. $1.50, net. New York: Henry Holt & Co. 1899. The Literary Remains of Henry James. Edited, with an introduction, by WILLIAM JAMES. With Portrait. Crown 8vo. $2.00. Boston: Houghton, Mifflin & Co. 1885. The Foundations of Ethics. By JOHN EDWARD MAUde. Edited by WILLIAM JAMES. 12mo. $1.50. New York: Henry Holt & Co. 1887. 99 PSYCHOLOGY BY WILLIAM JAMES Professor of Psychology in Harvard University NEW YORK HENRY HOLT AND COMPANY HARVARD COLLEGE RARY GIFT OF BOSTON SCHOOL COMMITTEE LIBRARY COPYRIGHT, 1892, BY HENRY HOLT & CO. ROBERT DRUMMOND, New York. PREFACE. IN preparing the following abridgment of my larger work, the Principles of Psychology, my chief aim has been to make it more directly available for class-room use. For this purpose I have omitted several whole chapters and rewritten others. I have left out all the polemical and historical matter, all the metaphysical discussions and purely speculative passages, most of the quotations, all the book-references, and (I trust) all the impertinences, of the larger work, leaving to the teacher the choice of orally restoring as much of this material as may seem to him good, along with his own remarks on the topics successively studied. Knowing how ignorant the average student is of physiology, I have added brief chapters on the various senses. In this shorter work the general point of view, which I have adopted as that of 'natural science,' has, I imagine, gained in clearness by its extrication from se much critical matter and its more simple and dogmatic statement. About two fifths of the volume is either new or rewritten, the rest is 'scissors and paste.' I regret to have been unable to supply chapters on pleasure and pain, æsthetics, and the moral sense. Possibly the defect may be made up in a later edition, if such a thing should ever be demanded. I cannot forbear taking advantage of this preface to make a statement about the composition of the 'Principles of Psychology.' My critics in the main have been so indulgent that I must cordially thank them; but they have been unanimous in one reproach, namely, that my |