If, therefore, we accept the Unity of Action as a general rule, binding upon all artists, we can hardly deny that the most obviously natural arrangement for the story is to set it forth in one act, without any intermission or subdivision whatsoever—a single action in a single act. Yet it is the play in three acts which we are bound to recognize at once as possessing the ideal form, since it enables the dramatist to set apart the three divisions, which Aristotle declared to be essential to a well-constructed tragedy—the beginning, the middle, and the end—each presented in an act of its own. To put a play into more than three acts is possible only by halving one or another of these three essential parts. In a four-act play, the beginning may be split into two acts; and in a five-act play the middle may also be subdivided.
The logic of the three-act form, and the convenience of it also, are so obvious that ever since the tyranny of the Procrustean framework in five acts was abolished in the middle years of the nineteenth century, practical playwrights of all countries have favored it more and more. The young Dumas used it in his later plays, and so did Ibsen, that consummate master of stagecraft, emancipated from empty traditions, but profiting shrewdly by every available device of his immediate predecessors. If the four-act form is also popular to-day, this seems to be because the modern dramatist, intending a play in three acts, finds himself forced by sheer press of matter, to subdivide one of the essential members, as Sir Arthur Pinero had to do in the 'Second Mrs. Tanqueray' and Mr. Henry Arthur Jones in the 'Liars.' Even the opera, which liked the larger framework of five acts when Scribe was writing librettos for Halévy and Meyerbeer, is now content with only three, since Wagner revealed his skill as a librettist.
It is true that Freytag, in his sadly old-fashioned treatise on 'Technic of the Drama,' accepted without cavil the five-act form, and even attempted to justify it by asserting that there are in fact five divisions of a tragic action. He symbolized the arrangement of a drama in a pyramidal structure, declaring that it ascends from the Introduction to the Climax, and then descends to the Catastrophe. Obviously these are only different terms for the beginning, the middle, and the end. But he vainly imagined two other members, the Rise, which intervenes between the Introduction and the Climax, and the Fall, which he inserted between the Climax and the Catastrophe. Obviously, again, this is an explanation after the event; and it seems to have its origin solely in his acceptance of the five-act form. And Freytag was forced to abandon his own theory when he considered honestly certain of the masterpieces of the modern drama. He admitted it to be "impossible that the single acts should correspond entirely to the five great divisions of the action." He asserted that "in the Rising Action, the first stage was usually in the first act, the last sometimes in the third; of the Falling Action the beginning and the end were sometimes taken in the third and fifth acts." Yet he failed to see that if he made this admission, he cut the ground from under his feet, and that there was no longer any acceptable reason for his insistence upon the five-act form.
Freytag had no doubt at all as to the necessity of the division into five acts. He received it with blind faith, as tho it had been prescribed by divine authority. Yet if he had chosen to explore the early history of the drama in his own tongue, he would have found Hans Sachs sometimes extending his plays into six acts, and even into seven. And if he had cared to consider the drama of the Spaniards he would have seen that the most of the plays of Calderon are in three acts—a division which the great dramatic poet of Spain had taken over, as he had taken over so much else, from his masterful predecessor, Lope de Vega. In his interesting and illuminating little treatise on the art of writing plays, Lope de Vega gave the credit of establishing the three-act form to Virues. Plays had previously been written in four acts; as Lope puts it pleasantly: "The drama had gone on all fours, like a child, and truly it was then in its infancy."
Freytag ignored or was ignorant of Hans Sachs and Calderon. His mind was fixed on Goethe and on Schiller, altho his vision also included Shakspere, upon whom the two German poets had more or less modeled themselves. The tradition of the five-act form might not obtain in the earliest German drama, as it did not obtain in the Spanish; but it was firmly established in the later German drama, in the English, and in the French. It is easy to see that the later Germans derived it from the French and the English; but where did the French and the English get it? Where could they get it? No such division existed in the medieval drama, in the mysteries and in the miracle-plays, out of which the drama of every modern language has been developed. No such division existed in the Greek drama, which has served as a standard and as a stimulus to the drama of every modern literature. A Greek tragedy was represented without any intermission in a single, long unbroken act; and if a sequence of three plays was sometimes performed, one after another, on the same day, and dealing with successive periods of the same story, this trilogy might suggest a division into three parts. Nor is any hint of the duty of dividing a tragedy into five parts to be discovered anywhere in Aristotle.
II
And yet we must go back to the Greek theater if we want to see why it is that the 'Femmes Savantes' of Molière and the 'School for Scandal' of Sheridan are each of them in five acts. But it is not from a Greek that we get the law that this division was obligatory on all self-respecting dramatists; it is from a Roman, writing at a time when the drama of his own language had been ousted from the stage by pantomimic spectacle and by gladiatorial combat. It is Horace, who, in his epistle on the art of poetry, declares the necessity of five acts:
Ne brevior, neu sit quinto productior actu
Fabula quae posci vult et spectata reponi.
Sir Theodore Martin rendered this in an English rimed couplet, which does not completely convey the meaning of the two Latin lines, but which will serve to show the rigidity of the rule laid down by the Roman poet:
Five acts a play must have, nor more nor less,
To keep the stage and have a marked success.