On Thucydides: An Essay by Dionysius of Halicarnassus

Being a master of rhetoric, grammar, and history, Dionysius of Halicarnassus wrote not only tracts in each of these fields, but acute literary criticism. His essays have been collected in a book collectively called Critical Essays; a book in which one can find not only semblances of ancient orators, but careful analysis of their writings and speeches—Demosthenes and Thucydides are his most felicitous critical essays.