But the Byzantine writers were rather to be compared with the Alexandrians of the age of the Ptolemies. They were far more scientific than their predecessors and proportionately less artistic. As grammarians they analysed and criticised the language, insisting on the retention of those chance forms of speech which the masters of the earlier day had used spontaneously. The critical spirit of the grammarian found its counterpart everywhere in the prevalence of the analytical rather than the synthetic cast of thought. As the masters of the past were the models, so were their stores of knowledge the chief sources on which to draw. What Aristotle had said must be considered the last word as regards physical knowledge. What the classical poets and historians had written must needs be copied, analysed, and praised as the final expression of human thought. Men who under different auspices and in a different atmosphere might perhaps have produced original works of some significance, contented themselves with elaborating anthologies, compiling dictionaries and encyclopædias, and epitomising chronicles of world history from the ancient sources. It is equally characteristic of the time that writers who did attempt creative work found prose romance the most congenial medium for the expression of their ideals. Even this measure of creative enthusiasm chiefly marked the earliest period of the Byzantine era and was stifled by the conservatism of the later epoch. A BRIEF SURVEY OF THE SOURCES But if the reminiscent culture of the Byzantine Empire failed to produce an Herodotus, a Thucydides, or a Livy, it gave to the world, nevertheless, a line of historians and chronologists of the humbler class, beginning with Procopius the secretary of Justinian’s general, Belisarius, and ending with Ducas, Phrantzes, Laonicus Chalcocondyles, and Critobulus, the depicters of the final overthrow of Constantinople, who have left us a tolerably complete record of almost the entire life of the Eastern Empire. A list of these historians--numbering about half a hundred names--has been given in our general bibliography of Rome in Volume VI.