Does the United States Constitution contain unwritten principles that are as binding as the text itself? Laurence H. Tribe, a prominent constitutional scholar and professor at Harvard Law School, examines the existence and legitimacy of constitutional norms that exist outside the formal written document. He argues that these invisible principles are essential for interpreting the written text and maintaining the integrity of the American legal system.

Legal scholars frequently cite this work as a significant contribution to the discourse on constitutional interpretation and judicial philosophy. Experts note that the text provides a sophisticated, albeit dense, exploration of the tension between textualism and the evolving nature of constitutional law.