Giambattista Vico (1725) The New Science G.W.F. Hegel (1807) The Phenomenology of Spirit Auguste Comte's Law of three stages in 'Plan de travaux scientifiques nécessaires pour réorganiser la société (Plan of scientific studies necessary for the reorganization of society, 1822). Søren Kierkegaard (1843) Either/Or, Stages on Life's Way (1845) Karl Marx (1867) Das Kapital James George Frazer (1890) The Golden Bough Freud (1900) The Interpretation of Dreams Wilhelm Wundt (1912) Elemente der Völkerpsychologie (The Elements of Social Psychology) Lewis Mumford (1934) Technics and Civilization Stephen Pepper (1942) World Hypotheses Jean Gebser (1949) The Ever-Present Origin Piaget (1950) The psychology of intelligence Northrop Frye (1957) Anatomy of Criticism Hayden White (1973) Metahistory Kieran Egan (1979) Educational Development[10] Ken Wilber (1995) Sex, Ecology, Spirituality