“What is it all about?” she said.

“Call it,” I answered, “a psychologic exercise in paint.”

“Then it is not a picture?”

“O! yes it is—or at least I hope so.”

“But—” she shook her head—“I do not understand. A picture is a picture, and a sum is a sum, and a psychologic exercise is a psychologic exercise.”

“You mean they are not assimilable terms. What, then, is your definition of a picture?”

She considered, drawing thoughtfully at her cigarette.

“I think,” she said presently, “it is art—just that.”

“Well, what is art?”

Again she considered, and answered, “Form.”