Why is it great? This line, from the poet Elizabeth Alexander’s beautiful memoir about the death of her husband, knocked me out on a couple levels. First, I had no idea that Henry Ford and Thomas Edison were best friends, and there’s something wonderful about the mere fact of this. And second, it’s incredibly moving that Ford actually captured his friend’s last breath and put it in a test tube. It’s this beautiful combination of science and love. And finally, I love the rhythm of those last words, “kept it evermore.” Like a fairy tale about enduring friendship.