A man like Sokrates, living in such a community, did not need to write down his wisdom. He had no such vast public as the modern philosopher has to reach. He could hail any one he happened to pass in the street, begin an argument with him forthwith, and set a whole crowd thinking and inquiring about subjects the mere contemplation of which would raise them for the moment above matters of transient concern. For more than half a century any citizen might have gratis the benefit of oral instruction from such a man as he. And I sometimes think, by the way, that--curtailed as it is to literary proportions in the dialogues of Plato, bereft of all that personal potency which it had when it flowed, instinct with earnestness, from the lips of the teacher--even to this day the wit of man has perhaps devised no better general gymnastics for the understanding than the Sokratic dialectic. I am far from saying that all Athens listened to Sokrates or understood him: had it been so, the caricature of Aristophanes would have been pointless, and the sublime yet mournful trilogy of dialogues which pourtray the closing scenes of the greatest life of antiquity would never have been written. But the mere fact that such a man lived and taught in the way that he did goes far in proof of the deep culture of the Athenian public. Further confirmation is to be found in the fact that such tragedies as the Antigone, the Oidipous, and the Prometheus were written to suit the popular taste of the time; not to be read by literary people, or to be performed before select audiences such as in our day listen to Ristori or Janauschek, but to hold spell-bound that vast concourse of all kinds of people which assembled at the Dionysiac festivals.