Columbia subject headings:
Intellectual life--17th century.
Intellectual life--History--18th century.
Thought and thinking--History--17th century.
Thought and thinking--History--18th century.
Harvard subject headings:
Intellectual life--17th century.
Intellectual life--18th century.
Thought and thinking--History--17th century.
Thought and thinking--History--18th century.
Princeton subject headings:
Intellectual life--17th century.
Intellectual life--18th century.
Thought and thinking--History--17th century.
Thought and thinking--History--18th century.