Unity of action was the first dramatic law of the ancients; unity of time and place were mere consequences of the former which they would scarcely have observed more strictly than exigency required had not the combination with the chorus arisen. For since their actions required the presence of a large body of people and this concourse always remained the same, who could go no farther from their dwellings nor remain absent longer than it is customary to do from mere curiosity, they were almost obliged to make the scene of the action one and the same spot and confine the time to one and the same day. They submitted bona fide to this restriction; but with a suppleness of understanding such that in seven cases out of nine they gained more than they lost thereby. For they used this restriction as a reason of simplifying the action and to cut away all that was superfluous, and thus, reduced to essentials, it became only the ideal of an action which was developed most felicitously in this form which required the least addition from circumstances of time and place.
The French, on the contrary, who found no charms in true unity of action, who had been spoilt by the wild intrigues of the Spanish school, before they had learnt to know Greek simplicity, regarded the unity of time and place not as consequences of unity of action, but as circumstances absolutely needful to the representation of an action, to which they must therefore adapt their more complicated and richer actions with all the severity required in the use of chorus, which, however, they had totally abolished. When they found, however, how difficult, nay at times impossible this was, they made a truce with the tyrannical rules against which they had not the courage to rebel. Instead of a single place they introduced an uncertain place, under which we could imagine now this now that spot; enough if the places combined were not too far apart and none required special scenery, so that the scenery could fit the one about as well as the other. Instead of the unity of a day, they substituted unity of duration, and a certain period during which no one spoke of sunrise or sunset, or went to bed, or at least did not go to bed more than once, however much might occur in this space, they allowed to pass as a day.[5]
The Elizabethan author writing, in his public performances, for an audience accustomed to build imaginatively a setting from hints given by properties, signs on the stage, or descriptions in the text, changed the scene at will. Recall the thirteen changes in Act III of Antony and Cleopatra.
On the modern stage such frequent change is undesirable for three reasons: the expense of constructing and painting so many scenes; the time consumed in making the changes, which may reduce decidedly the acting time of the play; and the check in sustained interest on the part of the audience caused by these many changes. The growth of the touring system also has led to reduction in the number of scenes, for transportation of numerous and elaborate sets is too expensive. Moreover, the interest in extreme realism has carried us more and more into such scenes of simple or sordid living as call for only one to three sets in a play.
At times it is easy, or at least possible with ingenuity, to have for a play, whatever its length, but one setting. Von Hofmannsthal’s Electra is an illustration. Another is The Servant in the House, a play in five acts by Rann Kennedy.
The scene, which remains unchanged throughout the play, is a room in the vicarage. Jacobean in character, its oak-panelling and beamed-ceiling, together with some fine pieces of antique furniture, lend it an air of historical interest, whilst in all other respects it speaks of solid comfort, refinement, and unostentatious elegance.[6]
Hervieu’s Connais-Toi, a play of three acts, is another instance of one setting throughout.[7]
Not infrequently it is comparatively simple to confine a play to one set for each act, or even less. The Great Divide, by William Vaughn Moody, and The Weavers, by Hauptmann, show a new setting for each act. In The Truth, by Clyde Fitch, Acts I and II have the same setting: “At Mrs. Warder’s. An extremely attractive room in the best of taste”; Acts III and IV are in “Mr. Roland’s rooms in Mrs. Crespigny’s flat in Baltimore.” In the four acts of The Witching Hour, by Augustus Thomas, there is a change of set only for Act II.[8] Such reducing of possible settings to two or three for a play of four or five acts requires practice, and, in some cases, decided ingenuity. In present-day use the safest principle is this: a set to an act, if really needed, but no change of set within the act unless there be unavoidable reason for it.
What, then, is the would-be dramatist to do when faced by six or more settings to a five-act play, or two or three settings within what he believes should be an act? Often what seems a necessary early scene is but clumsy exposition: skilful handling would incorporate it with the scene immediately following. Scene 1, Act III, of Dryden’s The Spanish Friar is in the street. Lorenzo, in friar’s habit, meeting the real friar, Dominic, bribes him to introduce him into the chamber of Elvira. The scene is merely the easiest way of making the audience understand why the two men enter together very early in the next scene.