In psychoanalytic thought, libido (from the Latin: desire, lust ) is the psychic and emotional energy associated with man’s instinctual biological drives (sexual desire). Though theoretically held in check by the ego and super-ego, in Freudian thought libido understands man as a sexual animal whose happiness derives from the unrestrained libido . The virtue of chastity in Freudian logic could only end in illness and unhappiness. Such thinking became normative in the United States in the 1960s, and it was not long before the greatest of natural mysteries,” the marriage act, was reduced to an openly discussable fun activity. Paul VI offered libido as one way Satan, the “malign, clever seducer” undermines man’s sexual morality with his “sophistry.” The Devil’s strategy here, as the Pope cautioned, is “eminently logical.” He approaches man with what amounts to a false reason in his mind, which, if dwelled on, can influence the will by rousing him to do something evil which seems ...