Four years ago, a word came to me: restless. That’s me, I thought. That’s what I am: restless. And then I saw how well it went with the word “nest.” Restless Nest. Suddenly, I had a retort, a comeback, to the tiresome questions about how I was coping with our newly empty nest. “It’s not empty,” I would say. “It’s restless.” I liked saying it, because it instantly defused a whole Molotov-cocktail shaker full of flammable issues behind the words “empty nest.” There was the implied sexism—“I’m sure your husband’s fine but you must be a mess!”—and ageism: “wow, life’s pretty bleak and empty at your age, isn’t it?” And then there were my own incendiary issues: I hated the thought of my college-age children judging me and thinking my life was now empty and dull. I resented the mixed messages from well-meaning friends, which I somehow heard as: if you’re a good and loving mother, of course you are going to feel bereft when your children leave. On the other hand, if you do feel bereft, that must mean you defined yourself through your children, and didn’t we all vow thirty years ago we wouldn’t do that? Four years later, thinking about what I was thinking then makes my head spin. Because here’s one thing I’ve learned: I am not the only restless one in this nest, and I’m not just talking about my husband. Although he’s a good place to start. “Read this,” he said on Sunday, pointing to a New York Times Opinion [...]