"In the interval between the epics of Homer...and the age of the three great tragic poets, thinkers began to explore the various phenomena of the external world and came to understand many aspects of nature which had hitherto been shrouded in complete mystery. The creative literary activity of this epoch likewise betokens on the part of the Greeks an increasingly higher level of self-understanding and self-consciousness, in the best sense of the word. At this time appeared a group of lyric poets, who had looked deeply within their own natures, and through the vehicle of their poetry, made...