I don't know, but this video does give you something to think about.
"It is the common fate of the indolent to see their rights become a prey to the active. The condition upon which God hath given liberty to man is eternal vigilance; which condition if he break, servitude is at once the consequence of his crime and the punishment of his guilt." John Philpot Curran in a speech upon the Right of Election in 1790
"But you must remember, my fellow-citizens, that eternal vigilance by the people is the price of liberty, and that you must pay the price if you wish to secure the blessing. It behooves you, therefore, to be watchful in your States as well as in the Federal Government." -- Andrew Jackson, Farewell Address, March 4, 1837
"Eternal vigilance is the price of liberty." -- Wendell Phillips, (1811-1884), abolitionist, orator and columnist for The Liberator, in a speech before the Massachusetts Antislavery Society in 1852, according to The Dictionary of Quotations edited by Bergen Evans
(By the way, contrary to popular opinion, Thomas Jefferson didn't make a quote similar to this.)