I. The commencements of philosophy, chiefly among the Orientals, with whom philosophy, mythology, and the ology were inseparably intertwined.
II. The philosophy of the Greeks, which comprehends of course the philosophy of the Romans, as it was essen tially Greek from Cicero to Boethius.
III. The philosophy of the Schoolmen, which in part overlaps modern systems. To this the philosophy of the Jews and Saracens may be joined as an appendix, since it affords the transition to it from the Greeks.
IV. The philosophy of the Renaissance, or Transition Age, commencing with Gemistus Pletho and the Medicean Academy, and ending with Pascal and Gassendi.
V. The philosophy of Modern Times — from Francis Bacon and Descartes. Each of these periods has many subdivisions, which have been variously constituted by different historians, and necessarily vary with the variation of the aspects urder which philosophy is contemplated by the several chroniclers of its fluctuations.
Literature. — The fullest repertory of works on the several schemes of philosophy, on its general and special history, and on the history of the philosophers themselves, and of particular doctrines, may be found in Ueberweg, History of Philosophy, translated by George S. Morris (N.Y. 1875, 2 volumes, 8vo). Up to the date of that work the fullest treatise on the subject was H. Ritter's Geschichte der Philosophie (Gotha, 1854, 12 volumes, 8vo). A convenient summary is Maurice's Moral and Metaphysical Philosophy (Lond. 1850-56, and later 4 volumes, 8vo), which gives a historical review of the whole subject. (G.F.H.)