A bighearted book of wisdom, wit, and insight, celebrating the love and joy of being a grandmother, from the Pulitzer Prize–winning columnist and #1 New York Times bestselling authorIt's a little challenging to suss out why exactly it can be so magical. . . . All I know is: The hand. The little hand that takes yours, small and soft as feathers. I'm happy our grandson does not yet have sophisticated language or a working knowledge of personal finance, because if he took my hand and said, "Nana, can you sign your 401(k) over to me," I can imagine myself thinking, well, I don't really need a retirement fund, do I? And besides, look at those eyelashes. Or the greeting. Sometimes Arthur sees me and yells "Nana!" in the way some people might say "ice cream!" and others say "shoe sale!" No one else has sounded that happy to see me in many many years. Before blogs even existed, Anna Quindlen became a go-to writer on the joys and challenges of family,...