Is Leviathan persuasive? One might think that the existence of the United States is sufficient refutation of Hobbes’s insistence that there can be only one source of law in a coherent political system; if federalism is one problem, the separation of powers is another. Hobbes was deeply hostile to judges who thought that their expertise in the Common Law gave them an authority equal or superior to the sovereign’s. On the other hand, one might think that the lumbering and lobbyist-ridden American system suggests that Hobbes was on to something even if we could not demonstrate it with the certainty of geometry. Above all, perhaps, his skepticism about rights and his prioritizing freedom from fear above all other freedoms still pose some awkward questions for us some 370 years later.