“Charles I’s attempt to collect ship-money without the consent of Parliament was declared by his opponents to be “unjust and unlawful,” and by him to be just and lawful. Only the military issue of the Civil War proved that his interpretation of the Constitution was the wrong one. The same thing happened in the American Civil War. Had States the right to secede? No one knew, and only the victory of the North decided the legal question. The belief— which one finds in Locke and in most writers of his time—that any honest man can know what is just and lawful, is one that does not allow for the strength of party bias on both sides, or for the difficulty of establishing a tribunal, whether outwardly or in men’s consciences, that shall be capable of pronouncing authoritatively on vexed questions. In practice, such questions, if sufficiently important, are decided simply by power, not by justice and law. To some degree, though in veiled language, Locke recognizes this fact. In a dispute between legislative and executive, he says, there is, in certain cases, no judge under Heaven. Since Heaven does not make explicit pronouncements, this means, in effect, that a decision can only be reached by fighting, since it is assumed that Heaven will give the victory to the better cause. Some such view is essential to any doctrine that divides governmental power. Where such a doctrine is embodied in the Constitution, the only way to avoid occasional civil war is to practise compromise and common sense. But compromise and common sense are habits of mind, and cannot be embodied in a written constitution.”
―
Bertrand Russell,
A History of Western Philosophy: And Its Connection with Political and Social Circumstances from the Earliest Times to the Present Day