"You must have perfect command of your medium, just in itself, as a tool. Listen," he stood up, his heavily jowled face grim and stern, drew a long breath, as if he were about to speak, and then as at a sudden thought, paused, the expression of his face changing with comical suddenness to a broad smile, and began to laugh. The girls stared at him in amazement, wondering if he had taken leave of his senses. Apparently something very funny had popped into his mind, just as he was about to go on with his statement to them. It must have been really _very_ funny indeed, for he could not stop his laughter, try as he might. It was too much for him. Both hands on his hips, throwing back his head, he pealed out an irresistible, "Ha! Ha!" as though he would burst if he did not laugh. Seeing their astonished faces, he tried to stop to tell them the joke, choked himself down to rich chuckles, opened his mouth to speak, and, the joke striking him afresh, went off again in a huge roar of mirth that made them both smile and then laugh outright in sympathy. At this, his face instantly resumed its sad, stern expression, and he was looking at them severely as before, breathing quickly, it is true, as though he had been running, but without a trace of any feeling. "There you see," he said drily. "That is an example of what I mean by command of a medium. To be master of _my_ tool I must not only be able to laugh, when I feel like it, but whenever I need to laugh, whether I feel like it or not. And I assure you, young ladies, I do not feel in the least like laughing now, having had this glimpse of the future as it will be, shaped to the American mold, by the people of the future." The girls were stricken silent by all this, their lips, frozen in astonishment, still curving in the set smile that was all that was left of their foolish, induced mirth. Marise was nettled and angry. He had no business playing tricks like that on them. She had been made to appear foolish, horribly foolish, and she resented it. "Well, Miss Mills," he went on, addressing Eugenia, "you cannot get such a control of your medium, you cannot learn to speak any language beautifully, without long, long dull hours of the oh! oh! ah! ah! practice that you scorn. You cannot buy such a command of your medium, not for millions of your great round dollars. No, not the wealthiest, sharpest American who ever lived can possess European culture, by buying little pieces of it here and there, and hanging it up on his wall. By changing the very fibre of your being, that is the only way to become anything that is worth becoming. And you cannot change the fibre of your being without dying a thousand deaths and knowing a thousand births."