- Plutarch
- Michael Grant
- Confucius
- Tacitus
- J.M. Roberts
- Samuel P. Huntington
- Michael Parenti
- Suetonius
- John Julius Norwich
- Henry Hazlitt
- Robin Lane Fox
- Henri Troyat
- Malcolm Cowley
- Paul Anthony Cartledge
- Colin McEvedy
- Xenophon
- Jacob Burckhardt
- Joseph Mazur
- Alfred J. Church
- Charles Alexander Robinson Jr.