Produced by Turgut Dincer, Jane Robins and the Online Distributed Proofreading Team at http://www.pgdp.net (This book was produced from images made available by the HathiTrust Digital Library.) +---------------------------------------------+ | Note: | | | | _ around word indicated italics _clinical_ | +---------------------------------------------+ THE WORLD OF DREAMS _BY THE SAME AUTHOR_ THE SOUL OF SPAIN. AFFIRMATIONS. _Second Edition._ IMPRESSIONS AND COMMENTS. IMPRESSIONS AND COMMENTS. _Second Series._ THE TASK OF SOCIAL HYGIENE. THE WORLD OF DREAMS BY HAVELOCK ELLIS 'Sleep has its own world' [Illustration] BOSTON AND NEW YORK HOUGHTON MIFFLIN COMPANY 1922 PREFACE There are at least four different ways of writing a book on dreams. There is, for instance, the _literary_ method. In this way one goes to books or to the memories of other people for one's material, and so collects a great number of more or less wonderful stories. I have rejected this method, for it is entirely untrustworthy. Dreams are elusive at the best; only a very careful observer can set down a dream faithfully, even directly after it has occurred, and no one can safely entrust a dream to memory. There is, again, what I may call the _clinical_ method of studying dreams by the personal observation and collection of facts, with summation and analysis of the results. On a large scale, with the aid of the _questionnaire_, this method has been especially carried on in the United States, notably at Clark University under the inspiration of Dr. Stanley Hall. A strict and scientific adherence to the clinical method of studying dreams has resulted in Professor Sante de Sanctis's book _I Sogni_ (first edition 1899), which is, on the whole, the best book on dreams published in recent years. Then there is the _experimental_ method, which, not content with mere objective study of the phenomena, endeavours to interfere with them and to find out the results of interference. This method may be combined with other methods of studying dreams. In its pure form it has in recent years been especially practised by the late Mourly Vold. Its results are not without interest, but they do not cover a large part of the field, and they are not altogether reliable. Dreaming activity is so fluid and suggestible--and this is notably so when experimenter and subject are the same person--that interference with the phenomena deforms them, and we cannot be sure that by experiment we have really learned much about the life of dreams.