The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all.
If ye love wealth greater than liberty, the tranquility of servitude greater than the animating contest for freedom, go home from us in peace. We seek not your counsel, nor your arms. Crouch down and lick the hand that feeds you; May your chains set lightly upon you, and may posterity forget that ye were our countrymen.
The spirit of resistance to government is so valuable on certain occasions, that I wish it to be always kept alive. It will often be exercised when wrong, but better so than not to be exercised at all. I like a little rebellion now and then. It is like a storm in the atmosphere.
[I rarely see the second part quoted, but I think it's important to realize that Jefferson knew the implications of wha [...]
I believe that no government can exist for a single moment without the co-operation of the people, willing or forced, and if people suddenly withdraw their co-operation in every detail, the government will come to a standstill.
An invasion of armies can be resisted, but not an idea whose time has come.
(Translated from "On résiste à l'invasion des armées; on ne résiste pas à l'invasion des idées.")