Mr. Obama was visiting a Head Start classroom at the University of Kansas in Lawrence when he learned that the 4-year-olds were reading a Dr. Seuss book called “Sneetches and Other Stories.” In the book, Sneetches are characters with stars on their bellies who discriminate against others who lack stars.

“That is one of my favorite stories,” the president told the kids. “In fact most of the things I deal with as president would be solved if everybody read about the Sneetches. Because there are some people who think they’re special ‘cause they’ve got stars, and some who feel bad ‘cause they don’t.”