“…Then I say the earth belongs to each of these generations during its course, fully, and in their own right. The 2nd generation receives it clear of the debts and encumbrances of the 1st, the 3rd, of the 2nd and so on. For if the 1st could charge it with a debt, then the earth would belong to the dead and not the living generation. Then no generation can contract debts greater than may be paid during the course of its own existence. The constitution and the laws of their predecessors extinguished them, in their natural course, with those whose will gave them being. This could preserve that being till it ceased to be itself and no longer. Every constitution, then, and every law, naturally expires at the end of 19 years. If it be enforced longer, it is an act of force and 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. In the first place, this objection admits the right, in proposing an equivalent. But the power of repeal is not an equivalent…” -Thomas Jefferson