They also believed that restrictions imposed by the law on the actions of rulers as well as of ordinary citizens are the only valid shield against coercion on the part of any person or persons. Machiavelli forcefully expressed this belief in his Discourses on Livy (I.29), when he wrote that if there is even one citizen whom the magistrates fear and who has the power to break the law, then the entire city cannot be said to be free. It can be said to be free only when its laws and constitutional orders effectively restrain the arrogance of nobles and the licentiousness of the people.