[EternalVigilance]

Sorry to quibble, but your tagline is almost certainly wrong in its attribution. Jefferson didn't say it. Though often attributed to him, no original source for it has been found in his writings. It probably originally came from a speech John Philpot Curran gave in 1790:

"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."

It's still true, though, that's for sure.

Also, Wendell Phillips said this in a speech in 1852:

"Eternal vigilance is the price of liberty—power is ever stealing from the many to the few…. The hand entrusted with power becomes the necessary enemy of the people. Only by continual oversight can the democrat in office be prevented from hardening into a despot: only by unintermitted Agitation can a people be kept sufficiently awake to principle not to let liberty be smothered in material prosperity."

[Oceander]

I appreciate the scholarship, but I think I'll stick with the popular mythology for now. I'd attribute it to myself - I've been voicing the same sentiment rather frequently of late - but that'd just get me locked up and I'd rather have done something worth getting locked up for instead.