In an age when we are inundated with opportunities for distraction from essential issues by the latest tweets and youtubes on the antics of celebrities and sports stars, when we are overwhelmed by the administrative details and the minutiae of daily life can wear us down, it is instructive to see that Dr. Seuss could balance lighthearted children’s books with penetrating political cartoons. He was haunted by the war in Europe even as he could write Green Eggs and Ham.