Columbia subject headings:
Descartes, René, 1596-1650.
Diderot, Denis, 1713-1784.
Literature--History and criticism--Theory, etc.
Literature--Philosophy.
Plato.
Harvard subject headings:
Descartes, René, 1596-1650.
Diderot, Denis, 1713-1784
Imagination (Philosophy)--History--Congresses.
Literature--History and criticism--Theory, etc.
Literature--Philosophy
Plato
Princeton subject headings: