Aristotle, Horace, and Longinus, Classical Literary Criticism, translated by T. S. Dorsch, Penguin Books, 1975.

This collection features Aristotle's Poetics, his treatise on tragedy that stands as the supreme piece of criticism for tragedies of any age.

Eighteenth Century English Literature, edited by Geoffrey Tillotson, Paul Fussell, and Marshall Waingrow, Harcourt Brace Jovanovich, 1969.

In addition to The Critic, this comprehensive anthology features selections from all the famous Enlightenment writers, such as Alexander Pope, Jonathan Swift, Samuel Johnson, James Boswell, John Gay, Henry Fielding, and Edward Gibbon. This is an indispensable book for any student of Enlightenment literature or thought.

Eighteenth Century Plays, edited by Ricardo Quintana, Modern Library, 1952.

This collection of eight plays features Sheridan's first play, The Rivals; the volume also contains John Gay's The Beggar's Opera and Oliver Goldsmith's She Stoops to Conquer, two other popular Enlightenment comedies. Quintana's introduction surveys the eighteenth-century theater.

O'Toole...