Thalassa: Psychanalyse des origines de la vie sexuelle précédé de Masculin et Féminin

In Thalassa, Ferenczi expands the symbols of pallus and vagina into cosmic symbols, not by reference to myths but by his interpretations of embryonic, physiological, and psychological facts. he develops the view that the whole of life is determined by a tendency toreturn to the womb, equating the process of birth with the phylogenetic transition of animal life from water to land, and linking coitus to the idea of "thalassal regression": "the longing for the sea-life from which man emerged in primeval times."