"The case for a fresh perspective in the post-Alexandrine epoch is argued in a positive tone which may create the impression in some places that the writer has no misgiving at all about any element of his thesis. As said at the very start of this Introduction, no historian can afford to be cocksure: he must always keep his mind plastic. But he is allowed to state as forcibly as he can whatever he believes to be worthy of audience - all the more if he is pleading on behalf of something that has seemed a lost cause . The present writer has no wish to appear in the eyes of historians a convinced heretic. He is prepared for criticism, open to correction and agreeable to further dialogue. What he has not bargained for is indifference. His hope is to deserve, by setting about his job as honestly and thoroughly as possible, the right of the Themistoclean appeal: "Strike, but hear!""