light reflected from the ivory-coloured surface of the screens.
No verse play of mine requires much more than an hour for its performance; and most, being intended for a theatre where every evening winds up with comedy or satire, are much shorter.
"Deirdre," "The King’s Threshold," "The Hour-Glass," in its verse form, are more difficult to play than "The Green Helmet" or "The Countess Cathleen" because in each some one personage is upon the stage through the whole, or all but the whole play, and should not be attempted where the principal player lacks subjectivity and variety.
I have explained at the end of this book how often Lady Gregory has collaborated with me. I have sometimes asked her help because I could not write dialect and sometimes because my construction had fallen into confusion. To the best of my belief "The Unicorn from the Stars," but for fable and chief character, is wholly her work. "The Green Helmet" and "The Player Queen" alone perhaps are wholly mine.
May 1, 1922.
