Author Timeline

BC
Aeschylus  525-456
Herodotus  484-425
Thucydides  460-395
Plato  428-348
Aristotle  384-322
Euclid  Unknown (300 BC?)
AD
Tacitus  56-117
St Thomas Aquinas  1225-1274
Chaucer  1343-1400
Shakespeare  1564-1616
Milton  1608-1674
Locke  1632-1704
Kant  1724-1804
Mill  1806-1873
Lavoisier  1743-1794
Dostoevsky  1821-1881
Freud  1856-1939

Note that Freud is the last, most recent author in the Great Books.  IIRC, he is the only writer to have lived in the 20th century.  In related news, his  status as a 'great' author is probably the most disputed.  Still worth reading though.