CONTENTS OF INTRODUCTION
The two constituents of modern love — The purposes of the species and the purposes of the individual — Insufficiency of the former for the understanding of love — The individualization of love through the process of civilization — The organic interconnexion between the bodily and the mental manifestations of love — Possibilities of future development — Victory of the love of civilized man over the elemental force of the sexual impulse — Our own time a turning-point in the history of love.