American political theory has traditionally had much to say about rights and little about obligation. This tendency is wholesome; emphasis on rights is the most progressive characteristic of American legal traditions, the aspect of American law and social practice that is most admired abroad and best understood at home. People unversed in legal complexity do understand that they are entitled to the right of free speech, to a right against self-incrimination, to the right of religious freedom, to the right to a jury trial, to the right to vote. The Tenth Amendment is crucial: rights not granted to the state are reserved to the people. It is not a bad thing to live in a system in which we have so many rights that we do not list them all.