If taxation without consent is robbery, the United States government has never had, has not now, and is never likely to have, a single honest dollar in its treasury. If taxation without consent is not robbery, then any band of robbers have only to declare themselves a government, and all their robberies are legalized.
A man's natural rights are his own, against the whole world; and any infringement of them is equally a crime, whether committed by one man, or by millions; whether committed by one man, calling himself a robber, (or by any other name indicating his true character,) or by millions, calling themselves a government.
Any government, that is its own judge of, and determines authoritatively for the people, what are its own powers over the people, is an absolute government of course. It has all the powers that it chooses to exercise. There is no other or at least no more accurate definition of a despotism than this.
Martyrdom is evidence only of a man's honesty - it is no evidence that he is not mistaken. Men have suffered martyrdom for all sorts of opinions in politics and in religion; yet they could not therefore have all been in the right; although they could give no stronger evidence that they believed themselves in the right.