Columbia subject headings:
Democritus, approximately 460 B.C.-approximately 370 B.C.
Knowledge, Theory of.
Psychology.
Harvard subject headings:
Democritus, approximately 460 B.C.-approximately 370 B.C.--Contributions in psychology.
Democritus, approximately 460 B.C.-approximately 370 B.C.--Contributions in theory of knowledge.
Princeton subject headings:
Democrites.