A DEFINITION IN POLITICAL ECONOMY

"Will you never learn, my dear, the difference between real and exchangeable value?" The question was put to a husband, who had been lucky enough to be tied up to a political economist in petticoats. "Oh yes, my dear, I think I begin to see." "Indeed!" responded the lady. "Yes," replied the husband. "For instance, my dear, I know your deep learning, and all your other virtues. That's your real value. But I know, also, that none of my married friends would swap wives with me. That's your exchangeable value.