At first tragedies were brought on the stage as means of reminding men of the things which happen to them, and that it is according to nature for things to happen so, and that, if you are delighted with what is shown on the stage, you should not be troubled with that which takes place on the larger stage. For you see that these things must be accomplished thus, and that even they bear them who cry out "O Cithaeron." And, indeed, some things are said well by the dramatic writers...