Excerpt of the day

From The Invention of Air: A Story of Science, Faith, Revolution, and the Birth of America by Steven Johnson

A few days before I started writing this book, a leading candidate for the presidency of the United States was asked on national television whether he believed in the theory of evolution. He shrugged off the question with a dismissive jab of humor. "It's interesting that that question would even be asked of someone running for president," he said. "I'm not planning on writing the curriculum for an eighth-grade science book. I'm asking for the opportunity to be president of the United States."

It was a funny line, but the joke only worked in a specific intellectual context. For the statement to make sense, the speaker had to share one basic assumption with his audience: that "science" was some kind of specialized intellectual field, about which political leaders needn't know anything to do their business. Imagine a candidate dismissing a question about his foreign policy experience by saying he was running for president and not writing a textbook on international affairs. The joke wouldn't make sense, because we assume that foreign policy expertise is a central qualification for the chief executive. But science? That's for the guys in the lab coats.

That line has stayed with me since, because the web of events at the center of this book suggests that its basic assumptions are fundamentally flawed. If there is an overarching moral to this story, it is that vital fields of intellectual achievement cannot be cordoned off from one another and relegated to the specialists, that politics can and should be usefully informed by the insights of science. The protagonists of this story lived in a climate where ideas flowed easily between the realms of politics, philosophy, religion, and science. The closest thing to a hero in this book - the chemist, theologian, and political theorist Joseph Priestley - spent his whole career in the space that connects those different fields. But the other figures central to this story - Ben Franklin, John Adams, Thomas Jefferson - suggest one additional reading of the "eighth-grade science" remark. It was anti-intellectual, to be sure, but it was something even more incendiary in the context of a presidential race. It was positively un-American.