Lysander Spooner: “All contracts for such a purpose are absurd and void contracts, that no man can rightfully be compelled to fulfil.”

On the contrary, they acknowledge themselves robbers, murderers, and villains, pure and simple.

They do not attempt to deceive us, or mislead us, or reconcile us to their doings, by any such pretences, impostures, or insults as these.

They acknowledge it to be our unquestioned right and duty to kill them, if we can; that they expect nothing else, than that we will kill them, if we can; and that we are only fools and cowards, if we do not kill them, by any and every…

In short, they acknowledge themselves hostes humani generis: enemies of the human race.