Columbia subject headings:
Harvard subject headings:
Concepts--Philosophy--History--17th century.
Descartes, René, 1596-1650.
Idea (Philosophy)--History--17th century.
Knowledge, Theory of--History--17th century.
Reasoning--History--17th century.
Princeton subject headings:
Concepts--Philosophy--History--17th century.
Descartes, René, 1596-1650.
Idea (Philosophy)--History--17th century.
Knowledge, Theory of--History--17th century.
Reasoning--History--17th century.