# Jung Carl Gustav Jung (1875-1961), Swiss psychologist; one of the main psychiatric authorities of his time. He differed with Freud in regarding the libido (energy or driving force) as a will to live rather than a manifestation of the sex instinct, and holding that a neurosis is to be understood more by analysis of the patient's present problem and inadequate "adjustment" than by unearthing childhood fixations and conflicts. He divided all men into two classes—introverts and extroverts and laid tremendous stress on Druidism and wrote a great deal about it. See also Druids in this glossary.