[A]ll human legislation is simply and always an assumption of authority and dominion, where no right of authority or dominion exists. It is, therefor… - Lysander Spooner

Children learn the fundamental principles of natural law at a very early age. Thus they very early understand that one child must not, without just cause, strike or otherwise hurt, another; that one child must not assume any arbitrary control or domination over another; that one child must not, either by force, deceit, or stealth, obtain possession of anything that belongs to another; that if one child commits any of these wrongs against another, it is not only the right of the injured child to resist, and, if need be, punish the wrongdoer, and compel him to make reparation, but that it is also the right, and the moral duty, of all other children, and all other persons, to assist the injured party in defending his rights, and redressing his wrongs. These are fundamental principles of natural law, which govern the most important transactions of man with man. Yet children learn them earlier than they learn that three and three are six, or five and five ten. Their childish plays, even, could not be carried on without a constant regard to them; and it is equally impossible for persons of any age to live together in peace on any other conditions. It would be no extravagance to say that, in most cases, if not in all, mankind at large, young and old, learn this natural law long before they have learned the meanings of the words by which we describe it. In truth, it would be impossible to make them understand the real meanings of the words, if they did not understand the nature of the thing itself. To make them understand the meanings of the words justice and injustice before knowing the nature of the things themselves, would be as impossible as it would be to make them understand the meanings of the words heat and cold, wet and dry, light and darkness, white and black, one and two, before knowing the nature of the things themselves. Men necessarily must know sentiments and ideas, no less than material things, before they can know the meanings of the words by which we describe them.

It is true that the theory of our Constitution is, that all taxes are paid voluntarily; that our government is a mutual insurance company, voluntarily entered into by the people with each other; that each man makes a free and purely voluntary contract with all others who are parties to the Constitution, to pay so much money for so much protection, the same as he does with any other insurance company; and that he is just as free not to be protected, and not to pay any tax, as he is to pay a tax, and be protected. But this theory of our government is wholly different from the practical fact. The fact is that the government, like a highwayman, says to a man: Your money, or your life. And many, if not most, taxes are paid under the compulsion of that threat. The government does not, indeed, waylay a man in a lonely place, spring upon him from the road side, and, holding a pistol to his head, proceed to rifle his pockets. But the robbery is none the less a robbery on that account; and it is far more dastardly and shameful. The highwayman takes solely upon himself the responsibility, danger, and crime of his own act. He does not pretend that he has any rightful claim to your money, or that he intends to use it for your own benefit. He does not pretend to be anything but a robber. He has not acquired impudence enough to profess to be merely a "protector," and that he takes men's money against their will, merely to enable him to "protect" those infatuated travellers, who feel perfectly able to protect themselves, or do not appreciate his peculiar system of protection. He is too sensible a man to make such professions as these. Furthermore, having taken your money, he leaves you, as you wish him to do. He does not persist in following you on the road, against your will; assuming to be your rightful "sovereign," on account of the "protection" he affords you. He does not keep "protecting" you, by commanding you to bow down and serve him; by requiring you to do this, and forbidding you to do that; by robbing you of more money as often as he finds it for his interest or pleasure to do so; and by branding you as a rebel, a traitor, and an enemy to your country, and shooting you down without mercy, if you dispute his authority, or resist his demands. He is too much of a gentleman to be guilty of such impostures, and insults, and villainies as these. In short, he does not, in addition to robbing you, attempt to make you either his dupe or his slave. The proceedings of those robbers and murderers, who call themselves "the government," are directly the opposite of these of the single highwayman. In the first place, they do not, like him, make themselves individually known; or, consequently, take upon themselves personally the responsibility of their acts. On the contrary, they secretly (by secret ballot) designate some one of their number to commit the robbery in their behalf, while they keep themselves practically concealed.

For more than six hundred years—that is, since the Magna Carta in 1215—there has been no clearer principle of English or American constitutional law, than that, in criminal cases, it is not only the right and duty of juries to judge, what are the facts, what is the law, and what was the moral intent of the accused; but that it is also their right, and their primary and paramount duty, to judge the justice of the law, and to hold all laws invalid, that are, in their opinion, unjust, oppressive, and all persons guiltless in violating, or resisting the execution of, such laws.