This transmissibility of taboo is a reflection of the tendency, on which we have already remarked, for the unconscious instinct in the neurosis to shift constantly along associative paths on to new objects.
Sigmund FreudLet us consider the polarity of love and hate.... Now, clinical observation shows not only that love is with unexpected regularityaccompanied by hate (ambivalence), and not only that in human relationships hate is frequently a forerunner of love, but also that in many circumstances hate changes into love and love into hate.
Sigmund FreudWhat progress we are making. In the Middle Ages they would have burned me. Now they are content with burning my books.
Sigmund Freud