There are extraordinary situations which require extraordinary interposition. An exasperated people, who feel that they possess power, are not easily… - Thomas Jefferson

Every man should be protected in his lawful acts, and be certain that no ex post facto law shall punish or endamage him for them. ...The sentiment that ex post facto laws are against natural right, is so strong in the United States, that few, if any, of the State constitutions have failed to proscribe them. The federal constitution indeed interdicts them in criminal cases only; but they are equally unjust in civil as in criminal cases, and the omission of a caution which would have been right, does not justify the doing what is wrong. Nor ought it to be presumed that the legislature meant to use a phrase in an unjustifiable sense, if by rules of construction it can be ever strained to what is just.

On similar ground it may be proved that no society can make a perpetual constitution, or even a perpetual law. The earth belongs always to the living generation. They may manage it then, & what proceeds from it, as they please, during their usufruct. They are masters too of their own persons, & consequently may govern them as they please. But persons & property make the sum of the objects of government. The constitution and the laws of their predecessors extinguished then in their natural course, with those who gave them being. This could preserve that being till it ceased to be itself, & no longer. Every constitution then, & every law, naturally expires at the end of 19 years. If it be enforced longer, it is an act of force, & not of right. It may be said that the succeeding generation exercising in fact the power of repeal, this leaves them as free as if the constitution or law had been expressly limited to 19 years only.

I am certainly not an advocate for frequent and untried changes in laws and constitutions. I think moderate imperfections had better be borne with; because, when once known, we accommodate ourselves to them, and find practical means of correcting their ill effects. But I know also, that laws and institutions must go hand in hand with the progress of the human mind. As that becomes more developed, more enlightened, as new discoveries are made, new truths disclosed, and manners and opinions change with the change of circumstances, institutions must advance also, and keep pace with the times. We might as well require a man to wear still the coat which fitted him when a boy, as civilized society to remain ever under the regimen of their barbarous ancestors.