"An individual's life consisted of certain classified things: 'real things' which were unfrequent and priceless, simply 'things' which formed the routine stuff of life; and 'ghost things,' also called 'fogs,' such as fever, toothache, dreadful disappointments, and death. Three or more things occurring at the same time formed a 'tower,' or, if they came in immediate succession, they made a 'bridge.' 'Real towers' and 'real bridges' were the joys of life, and when the towers came in a series, one experienced supreme rapture; it almost never happened, though. In some circumstances, in a certain light, a neutral 'thing' might look or even actually become 'real' or else, conversely, it might coagulate into a fetid 'fog.' When the joy and the joyless happened to be intermixed, simultaneously or along the ramp of duration, one was confronted with 'ruined towers' and 'broken bridges.'"