Columbia subject headings:
Descartes, René, 1596-1650.
Locke, John, 1632-1704.
Methodology--History.
Harvard subject headings:
Descartes, René, 1596-1650.
Locke, John, 1632-1704
Methodology--History.
Princeton subject headings:
Descartes, René, 1596-1650.
Locke, John, 1632-1704.
Methodology--History.