I think that we need history as much as we need bread or water or love. To make the point, I want to discuss a single human being and why we should know him. And the first thing I want to say about him is that he is an example of the transforming miracle of education. When he and others wrote in the Declaration of Independence about “life, liberty and the pursuit of happiness,” what they meant by “happiness” wasn't longer vacations or more material goods. They were talking about the enlargement of the human experience through the life of...