Ellen and I met for brunch in Bethesda yesterday — our favorite meeting place between Annapolis and Reston — and afterward I slipped on my tennis shoes, took off my scarf and jacket and walked four miles on the Capital Crescent Trail, one of my favorite urban walks.

It was 70 degrees, and the path was clogged with joggers and strollers and bikers and dogs. A carnival atmosphere — and everyone in amazement that we could wear shorts and t-shirts instead of parkas and gloves.

What to say about such an amble and such an afternoon? Only that it was filled with the life force, was virtually overflowing with it. And everyone I saw — whether zooming by on a bicycle or being pushed in a wheelchair — seemed to feel the same way.