The Psychology of Sex Author:Oswald Schwarz As morality is the principle which governs and guards any human relationship, the main theme o this book is an analysis of the interaction of the physical sexual urge and the moral principle, with the conclusion that nothing that is truly natural can be really immoral. Such a statement makes sense only if morality is properly defined and clearly... more » distinguished from what one may call conventional taboos. The much-discussed "problem of sex" then stands revealed as the result of confusion of the real or essential morality with time-honoured but outworn convention.« less