The History of the Decline and Fall of the Roman Empire, by Edward Gibbon

Chapter LXII: Greek Emperors Of Nice And Constantinople

The Greek Emperors Of Nice And Constantinople.—Elevation And Reign Of Michael Palæologus.—His False Union With The Pope And The Latin Church.—Hostile Designs Of Charles Of Anjou.—Revolt Of Sicily.—War Of The Catalans In Asia And Greece.—Revolutions And Present State Of Athens.