I preferred this translation over the one by F. Storr because it is modern and more readable for me.
Sophocles' "older contemporary Aeschylus was credited by Aristotle with having been the first dramatic poet to use a second actor. The dramaturgy thought not the poetry of Sophocles therefore emerged immediately from what we should call the archaic. We may justly admire the extent of its emergence. The Greek drama as Sophocles found it stood to previous Greek entertainment somewhat as the movies of our century stand to the art of the stage. His work might perhaps be compared with that of the director Eisenstein for he mastered and intelligently extended a new medium." p. 171