Johnson rejects common descent and does not take a position on the age of the Earth. These concepts are a common theme in his books, including "Darwin on Trial," "Reason in the Balance: The Case Against Naturalism in Science, Law & Education" (1995), "Defeating Darwinism by Opening Minds" (1997), and "The Wedge of Truth: Splitting the Foundations of Naturalism" (2000). Eugenie Scott wrote that "Darwin on Trial" "teaches little that is accurate about either the nature of science, or the topic of evolution. It is recommended neither by scientists nor educators." Working through the Center for Science and Culture Johnson wrote the early draft language of the Santorum Amendment, which encouraged a "Teach the Controversy" approach to evolution in public school education.