If I no longer love Diana,' he wrote, 'what shall I do?' What could he do, with his mainspring, his prime mover gone? He had known that he would love her for ever - to the last syllable of recorded time. He had not sworn it, any more than he had sworn that the sun would rise every morning: it was too certain, too evident: no one swears that he will continue to breathe nor that twice two is four. Indeed, in such a case an oath would imply the possibility of doubt. Yet now it seemed that perpetuity meant eight years, nine months and some odd days, while the last syllable of recorded time was Wednesday, the seventeenth of May.