My father carried a spiral notebook in his shirt pocket, the small kind with a wire coil along the top that always snagged on the fabric when he pulled it out. I never understood it. He wasn't a writer. He sold insurance in a town small enough that he could have written everyone's policy on the back of one envelope. But there it was, every day, that little notebook with the bent corner, and a stub of pencil tucked into the spiral.

I remember sitting across from him at the diner on Route 9 when I was maybe twelve, watching him talk to a man named Carl who'd come over to our booth. They talked about nothing, the way men do — the weather, a transmission that was acting up, somebody's daughter getting married out of state. And when Carl left, my father pulled out the notebook and wrote something down. I asked him what. He said, "His wife's name is Eleanor. I keep forgetting it." Then he closed it and went back to his eggs like that was a perfectly normal thing to do.

It embarrassed me a little, honestly. It seemed needy. Why would you write down a stranger's wife's name?

I spent the better part of thirty years answering that question by becoming the opposite of him.

I sold too, eventually, though I sold equipment to contractors instead of peace of mind to widows. And I was good at it, which is to say I had learned to look like I was listening while my mind worked three moves ahead. A man would be telling me about his bad knee or his kid's baseball team and I'd be nodding, making the right sounds, all the while calculating whether he was ready to sign. I called it efficiency. I thought I was being respectful of everyone's time.

There was a contractor named Howard, a big slow-talking guy who'd come into the showroom on Thursdays. He liked to tell stories before he got down to business, long looping ones that never quite arrived anywhere. I dreaded him. One afternoon he was halfway through something about his brother in Tucson and I cut in, gently, professionally, to ask if he wanted the eight-inch or the ten. He stopped. He looked at me for a second with an expression I've never been able to scrub out of my memory — not angry, just a little smaller than he'd been a moment before. "Yeah," he said. "The ten, I guess." He bought it and left and didn't come back for a long time, and when he did he didn't tell stories anymore. He just pointed at what he wanted.

I told myself I'd closed the sale. I had. I'd also done something else, and I didn't have a word for it then.

My father died on a Tuesday in March, and a week later I was cleaning out the top drawer of his dresser when I found them. Not one notebook. Dozens. Held together with rubber bands gone brittle, stacked like little bricks. I sat down on the edge of his bed and started reading, and what I found wasn't insurance figures or to-do lists. It was people. Eleanor, Carl's wife, who liked her garden and hated her sister-in-law. The Pellegrino boy who'd gone into the Navy. Someone named Dot who'd lost a husband and was "doing better than she lets on." Page after page of the small true facts of other people's lives, collected the way some men collect stamps.

He wasn't trying to remember them so he could sell them something. He'd stopped selling years before some of those entries. He just wanted to know them, and he knew his own memory wasn't good enough to be trusted with something that mattered, so he wrote it down. The notebook wasn't a system. It was a confession that other people deserved more than he could naturally give, and an attempt to give it anyway.

I sat in his bedroom for a long time that afternoon, holding a rubber band that snapped in my fingers when I tried to stretch it.

Here is the thing nobody warns you about getting older, or at least nobody warned me. You start to notice who actually sees you. It becomes the whole game. I'd go to a party after I retired and find myself drifting away from the loud confident ones, the men telling jokes with one eye on the room to see who was laughing, and toward whoever happened to ask me a real question and then wait for the real answer. There was so little of it. People talked at each other in overlapping monologues, each waiting for their turn, and I understood with a hot flush of shame that I had been one of them my whole life. I had been Howard's salesman to everyone I knew.

Then there was the butcher.

This was after Carol and I moved closer to the coast, and I started going to a little shop where the man behind the counter wore a paper hat without irony. The second time I came in, before I'd said a word, he asked, "How's Biscuit? He get over that limp?" I had mentioned my dog exactly once, in passing, the week before. I stood there with my wallet half out and felt something open in my chest that I can only describe as being recognized. This man, who sold me three pounds of ground chuck, knew my dog's name. I drove home stupidly happy and I couldn't fully explain why to Carol.

"He probably does that with everyone," she said, not unkindly.

"Maybe," I said. "But it didn't feel like a trick."

And that's the difference, isn't it. You can always tell. The performed version of interest has a flatness to it, like a photograph of a fireplace. The real thing has heat. The butcher wasn't managing me. He was, for the ninety seconds I stood at his counter, genuinely curious about the limp of a dog he would never meet. I have no idea how he kept it all straight. Then I remembered the dresser drawer, and I thought maybe he didn't keep it straight at all. Maybe he wrote it down somewhere in the back, next to the order pad.

I bought a notebook the next week. The small spiral kind. I felt ridiculous, a grown man buying a child's tool to learn a thing my father had apparently known in his bones. I've used it clumsily. I forget to pull it out. I've written down the wrong grandchild's name and gotten gently corrected. But last month a woman at the library told me her husband was finally home from the hospital, and I knew his name was Walter, and I knew he'd had the surgery on his hip, and her face did the thing — that small opening — and I understood I had finally given somebody what Howard had wanted from me forty years ago and didn't get.

I keep the notebook in my shirt pocket now. It snags on the fabric when I pull it out, same as his did. What I can't work out, what I turn over on my long walks with Biscuit, is whether my father gave me this by carrying it where I could see it for thirty years, or whether I only learned it after he was gone and there was finally nobody left to perform for — and if it's the second one, what does that say about how much of me he ever actually got to meet?