Bibliography: Unknown by Dumas pere, Alexandre

In Song of the Lark, Cather writes: "Thea Kronborg learned the thing that old Dumas meant when he told the romanticists that to make a drama he needed but one passion and four walls." Later, Cather ends her essay "The Novel Demeuble" with the sentence: "The elder Dumas enunciated a great principle when he said that to make a drama, a man needed one passion, and four walls.

In an article in the Courier, Cather writes: "Old Dumas said that to make a play he needed but four walls, two people, and one passion."