I saw a woman in the parking lot as I walked to my car after photographing the Free Fair. She used a walker and seemed very unsteady. She told me she’d had a stroke, that left her with an uneven gait and slurred speech. I helped her to her truck, and put the walker in the bed of the truck for her.

It seemed like the right thing to do, but I was the only one helping her. I think this was one of the most important things I learned by taking care of my wife Abby at the end of her life: we all benefit from acts of kindness and generosity, and it is our duty as humanitarians.