'One might conclude,' said the Bishop helpfully, 'that an inert vessel, that merely accepts the circulating Fluid, but never expels it, becomes a stagnant back-water – or to put it otherwise, that the heart, by forcing it outwards, drives it around the cycle that in good time brings it back in from the organs and extremities. Hallo, Mr. Pepys!' (Shifting his focus to across the way.) 'Starting a war, are we?'