Columbia subject headings:
Freud, Sigmund, 1856-1939.
Philosophers--Psychology.
Psychoanalysis and philosophy.
Harvard subject headings:
Freud, Sigmund, 1856-1939
Kant, Immanuel, 1724-1804
Plato
Psychology and philosophy.
Sartre, Jean-Paul, 1905-1980
Princeton subject headings: