‘It’s mad,’ said Z, ‘to think that only what lasts matters. How can that be? If we lose everything? It can’t be. And we all lose everything. Everything.’ I asked if he found the ephemeral enough; I said that so far I thought I did. He said yes. I said that what he’d been saying reminded me of the end of Ecclesiastes. ‘ “In the day when the keepers of the house shall tremble…And those that look out of the windows be darkened, and the grasshopper shall be a burden…” ’ He went very still, looking right at me. ‘That passage,’ he said, ‘is the centre of my book.’