And later, on a sleepless pillow, she puzzled, as she had often puzzled of late, as to how it was that she loved so strange a man, and loved him despite the disapproval of her people. And next day Martin Eden cast hack-work aside, and at white heat hammered out an essay to which he gave the title, "The Philosophy of Illusion." A stamp started it on its travels, but it was destined to receive many stamps and to be started on many travels in the months that followed..