A few good quotes:
"The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government." -Patrick Henry
"Government, in my humble opinion, should be formed to secure and to enlarge the exercise of the natural rights of its members; and every government, which has not this in view, as its principal object, is not a government of the legitimate kind." -James Wilson, Lectures on Law, 1791
"For earthly princes lay aside their power when they rise up against God, and are unworthy to be reckoned among the number of mankind. We ought, rather, to spit upon their heads than to obey them." -John Calvin(Commentary on Daniel, Lecture XXX Daniel 6:22)