An Outline of Sexual Morality

First published in 1922. The Introduction begins: "Any honest inquiry into the Primal Instincts of humanity will necessarily lead to a clearer understanding of their nature, their functions, and their potentialities, and so will help to pave the way for the appearance of a healthier and happier race of men. The dictum "Learn to know yourself," inscribed on the Temple of Apollo at Delphi, has never been of more vital importance, both individually and nationally, than it is to-day, and the various schools of modern psychological thought, which are steadily opening up those hitherto scarcely explored regions whence flow the springs of human actions, are gradually clearing away the ignorance which has been the real cause of so much disease and distress.”