William Paley

William Paley is invoked in the civil-disobedience essay as a familiar authority on moral questions, but his theory of political obligation becomes a test case for the limits of expediency. Thoreau first presents Paley’s rule as a way to calculate when resistance to government is permissible, then argues that justice sometimes requires action regardless of the calculation’s cost. Paley’s importance in the passage lies in this reversal: a framework that appears to authorize resistance cannot, in Thoreau’s view, answer the deepest cases of moral duty.

Paley’s account of political obligation

Paley enters the discussion through his chapter titled “Duty of Submission to Civil Government.” Thoreau describes his position as resolving civil obligation into expediency: obedience is warranted while the interests of society require the established government to remain in place. The test is practical and conditional. If a government cannot be resisted or changed without public inconvenience, it is to be obeyed; once that condition no longer holds, the obligation ends.

The principle gives resistance a recognized place, but it frames the decision as a comparison of consequences. Paley’s calculation weighs the danger and grievance of resistance against the probability and expense of correcting the wrong. Thoreau emphasizes that Paley leaves this judgment to each person. The individual is not simply commanded to submit; the individual must assess when submission has ceased to serve the public interest. Yet the permission remains bounded by the same expedient logic that makes obedience depend on resistance’s cost.

The drowning man and the limit of calculation

Thoreau challenges that boundary with a concrete moral case: someone who has unjustly taken a plank from a drowning man must return it, even if doing so means drowning too. Under a calculation of inconvenience, restoring the plank would appear irrational because it risks the taker’s life. Thoreau’s point is that the risk does not cancel the obligation. The injured person’s claim is not made conditional on whether restitution is advantageous to the one who owes it.

The example turns Paley’s method against itself. If every case of resistance is reduced to weighing grievance against danger, a person could treat even a direct duty to another as a matter of self-preservation. Thoreau instead presents justice as a demand that may stand firm when its cost is extreme. Paley’s allowance that each person judge the balance cannot, in Thoreau’s argument, make that balance the final measure of right.

From a moral example to national responsibility

Thoreau carries the argument from the individual case to the conduct of a nation. The United States, he says, must cease holding enslaved people and making war on Mexico even if doing so costs it its existence as a people. The paired injustices sharpen the contrast with expediency: these are not inconveniences to be included in a cautious political estimate, but wrongs that require cessation. The drowning man’s plank becomes a measure of collective responsibility, with the nation placed under an obligation to restore what it has unjustly taken.

Thoreau observes that nations in practice agree with Paley, treating political action according to expediency. But he immediately asks whether Massachusetts is doing what is right in the present crisis. The question shifts attention from abstract permission to the conduct of a particular political community. A theory that can describe when resistance is practical is inadequate, he suggests, if it leaves a society able to recognize injustice yet continue to accommodate it.

Paley as a foil in the essay’s political argument

Paley is not presented through a biography or an independent account of his life; his role is defined by the proposition Thoreau attributes to him. The essay places that proposition beside a more absolute ethical claim: some duties must be met even when the consequences are personally or politically disastrous. Paley’s reasoning supplies the position Thoreau contests, while the plank, slavery, and the war against Mexico give the contest its concrete stakes.

That contrast also explains why Paley is called a common authority on moral questions. Thoreau argues within a recognizable language of civic obligation rather than treating resistance as an impulsive exception. He accepts the question of when government may be resisted, but refuses to let public inconvenience decide whether a people may continue to do wrong. Paley’s conditional rule opens the door to judgment; Thoreau’s challenge is that judgment must answer to justice, not merely to the cost of changing course.