My name is Ansel Petrov. I’m seventy-one, and for forty-six years I have repaired shoes at a narrow shop on Fenner Street. It sits between the pharmacy and the bus shelter, and it smells of leather and warm glue.

I have one rule that I never wrote on the window. If you are out of work, I fix your shoes for nothing. I stamp a small cardboard ticket that says PAID WHEN YOUR LUCK TURNS, and I never ask your name. People thought it was a joke. For forty-six years I let them.

Three weeks ago a cream envelope slid under my door. No return address. Inside was an invitation to the town’s centennial ball at the Marlowe Grand Ballroom, my name written in careful blue ink. I was sure it was a mistake. My wife Lena, who passed two winters ago, would have told me to go anyway.

So I ironed my one good suit and put on my old brown work shoes, the ones I have soled so many times there is more repair than shoe. A cobbler never has time to fix his own.

The ballroom was blinding. Four hundred guests in silk and black tie, a chandelier the size of a car, a floor of pale marble that showed everyone twice. I stepped through the doors and a young usher in white gloves laid his arm across my chest. “Sir,” he said, looking straight at my feet, “this is Italian marble. Work shoes leave marks. I’ll have to ask you to wait by the coat check.”

Heads turned near the doors. A woman in emerald whispered to her husband. I did not argue. I have been told to wait by better doors than that. I stood with my invitation in one hand and my hat in the other.

Then, across the hall, the band stopped in the middle of a bar. Four hundred people went quiet. A tall woman in a navy gown stood at the microphone, and she was looking straight at me. “Mr. Petrov,” she said, her voice steady and warm, “would you please walk to the center of the floor? Yes, in those shoes.”

I walked. It is a very long way across marble when four hundred people are watching, and every step of my old brown shoes rang out. The usher stood frozen behind me. When I reached the center, the woman came down from the stage carrying a battered shoebox tied with kitchen string, and she set it gently at my feet.

“My name is Dr. Imani Brooks,” she said. “Eleven years ago I stood in your shop the night before the biggest interview of my life, and you gave me a ticket and told me to pay you when my luck turned. Mr. Petrov, would you please open the box?”

My hands shook so hard that the string took a full minute. Inside, packed tight as bricks, were cardboard tickets. Hundreds of them, soft and creased from years in wallets and coat pockets. Every one carried my faded stamp: PAID WHEN YOUR LUCK TURNS.

“We kept them,” Dr. Brooks said. “Every person in this room has one. Some of us carried it through bad years and good ones, because it was the only proof that somebody believed we would be all right.” All around me, guests were reaching into evening bags and breast pockets. Four hundred small pieces of cardboard rose into the light.

The woman in emerald was holding one. So was the man she had whispered to. So, I saw, was the usher, who had gone the color of the marble. He held his ticket in both gloved hands and whispered, “You fixed my mother’s boots, sir.”

“Your landlord is selling the building next month,” Dr. Brooks said. “We found out in August. There is no ball, Mr. Petrov. This whole evening is a payment.” Under the tickets lay a folded deed and one brass key. Four hundred people had given what they could, twenty dollars, two hundred, one man his whole bonus. The shop on Fenner Street was mine for good.

I did not make a speech. I have never made one. I sat down on the polished floor in my brown shoes, right in the middle of the marble, and I cried, and four hundred people in gowns and tuxedos came and sat down around me until the whole ballroom floor was full of people sitting.

The shop is still open. The rule is still the rule. There is a new sign in the window now, painted by a woman who keeps her ticket in her wallet: NO ONE WALKS ALONE IN BROKEN SHOES. And the marks on the marble? They cleaned them off the next morning. Nobody minded.