The _Methodists_ somewhat improved on the doctrine of empiricism, but ran wild in its improvement and erected over their fundamental theory such a superstructure of secondary and tertiary generalities as to cause the fundamental part to be entirely obscured from sight. There were not lacking, in those days of old, certain educated physicians who more or less vaguely comprehended that the entire truth of medicine did not inhere in any one of these systems, but that there was good and evil in each. These men, not being able to establish general rules, tried to decide practical questions according to their fancy or their reason. They assumed the name of _Eclectics_ or _Episynthetics_, meaning thereby that they adopted no exclusive system, but selected from each that which seemed to them best. They did not constitute a sect, because they had no precise dogmas nor theories, but they should not be confounded with the Pyrrhonians, who held to doubt as a fundament doctrine, the true eclectic doubting only that which he could not understand. True eclecticism in medicine, however, is rather the absence of fixed principles, or, as Renouard says, it is "individualism erected into a dogma, which escapes refutation because it is deficient{047} in principle." Many became eclectics to avoid discussing principles, and made of it a shelter. In one sense, then, an eclectic is one destitute of profound convictions, who sides with no particular party, is committed to no person or doctrine, and who is often so indifferent that he cannot judge with impartiality; consequently, to be truly eclectic is different from being an adherent of a school of eclecticism. During the historic period just reviewed, anatomy and physiology made most progress, next internal and external nosography, and next to these medical and surgical therapeutics, and although Coelius Aurelianus and Aretæus have left to us by far the best books issued up to their times, nevertheless not one of the writers of this period has achieved the distinction in which Hippocrates is held, since he, perhaps more than any other, combined intelligence, sincerity, disinterestedness, love of his art, and humanity. Under the classification of Renouard, already alluded to, the so-called _Age of Transition_ includes centuries commencing with the death of Galen, about A.D. 201, and ending with the revival of letters in Europe, about the year 1400. The first period of this transition age is the so-called Greek Period, which ends with the burning of the Alexandrian library, A.D. 640.