I feel that Leo’s deepest urge is this search for the Self, the central value in life - which is, in mythic terms, the same as the search for the father.
Greene establishes Leo’s core psychological imperative as the mythically-encoded quest for the solar father-principle and the Jungian Self, distinguishing it sharply from Capricorn’s senex and Aries’ combative god.
, The Astrology of Fate, 1984thesis