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.

Thomas Jefferson (1743-1826) American political philosopher, polymath, statesman, US President (1801-09)

Letter to Abigail Adams (22 Feb 1787)
    (Source)

Referring to Shays' Rebellion. See his contemporary letter to James Madison.