RELIGION AND NEUROLOGY It is with no small amount of trepidation that I take my place behind this desk, and face this learned audience. To us Americans, the experience of receiving instruction from the living voice, as well as from the books, of European scholars, is very familiar. At my own University of Harvard, not a winter passes without its harvest, large or small, of lectures from Scottish, English, French, or German representatives of the... more...

I THE SEXUAL ABERRATIONS The fact of sexual need in man and animal is expressed in biology by the assumption of a "sexual impulse." This impulse is made analogous to the impulse of taking nourishment, and to hunger. The sexual expression corresponding to hunger not being found colloquilly, science uses the expression "libido." Popular conception makes definite assumptions concerning the nature and qualities of this sexual impulse. It is... more...

INTRODUCTION Having read with much care the proof sheets of this book, I am prepared to say three things about it, and it gives me pleasure to say them here. THE BOOK IS WELL NAMED. "THE UNFOLDING LIFE." Turn which way we will, we see life unfolding all about us, and yet how faintly are its mysteries understood! And is it not the one thing above all others, which teachers, mothers, fathers and all of us, need to understand? It is well... more...

Chapter I THE ELEMENTS OF MEMORY Four Special Memory Processes You have learned of the sense-perceptive and judicial processes by which your mind acquires its knowledge of the outside world. You come now to a study of the phenomenon of memory, the instrument by which your mind retains and makes use of its knowledge, the agency that has power to resurrect the buried past or power to enfold us in a Paradise of dreams more perfect than reality.... more...

PREFACE. In this little book I have endeavoured to maintain the simplicity which is the ideal of this series. It is more difficult, however, to be simple in a topic which, even in its illustrations, demands of the reader more or less facility in the exploration of his own mind. I am persuaded that the attempt to make the matter of psychology more elementary than is here done, would only result in making it untrue and so in defeating its own... more...

THE REPRODUCTION OF LIVING BEINGS History of the Germ:—Cell-division—Parthenogenesis—Conjugation—Mneme—Embryological Development— Difference of the Sexes—Castration—Hermaphrodism— Heredity—Blastophthoria. A general law of organic life decrees that every living individual is gradually transformed in the course of a cycle which is called individual life, and which terminates with... more...

CHAPTER IINTRODUCTION Science. Before attempting to define psychology, it will be helpful to make some inquiry into the nature of science in general. Science is knowledge; it is what we know. But mere knowledge is not science. For a bit of knowledge to become a part of science, its relation to other bits of knowledge must be found. In botany, for example, bits of knowledge about plants do not make a science of botany. To have a science of... more...

SENSES. Sight.—Light.—Five minutes after birth, slight sensibility to light (2). Second day, sensitiveness to light of candle (3). Sixth and seventh days, pleasure in moderately bright daylight (3, 4). Ninth and tenth days, sensitiveness greater at waking than soon afterward (3). Sleeping babes close the eyes more tightly when light falls on the eyes (4). Eleventh day, pleasure in light of candle and in bright object (3).... more...

EDITOR’S INTRODUCTION The present volume appeals to the editor of this series as one of the most significant books, viewed from the standpoint of the future of our educational theory and practice, that has been issued in years. Not only does the volume set forth, in language so simple that the layman can easily understand, the large importance for public education of a careful measurement of the intelligence of children, but it also... more...

The Senses in the Lower Animals The sense of touch—The senses of taste and smell—Actinophryans having taste—The sense of sight—Modification of sight organs by surroundings—Sight in Actinophryans—Blind fish sensitive to light—Blind spiders—Blind man—Primitive eyes in Cymothoe—In the jelly-fish, sea-urchin, Alciope, Myrianida—The sight organs of the snail—Power of vision in... more...