The deadliest enemies of nations are not their foreign foes; they always dwell within their borders. And from these internal enemies civilization is always in need of being saved. The nation blest above all nations is she in whom the civic genius of the people does the saving day by day, by acts without external picturesqueness; by speaking, writing, voting reasonably; by smiting corruption swiftly; by good temper between parties; by the people knowing true men when they see them, and preferring them as leaders to rabid partisans or empty quacks.

--William James

Rightful liberty is unobstructed action according to our will within limits drawn around us by the equal rights of others. I do not add 'within the limits of the law,' because law is often but the tyrant's will, and always so when it violates the rights of the individual.

--Thomas Jefferson

This may be considered as the true palladium of liberty. . . . The right of self defence is the first law of nature: in most governments it has been the study of rulers to confine this right within the narrowest limits possible. Wherever standing armies are kept up, and the right of the people to keep and bear arms is, under any colour or pretext whatsoever, prohibited, liberty, if not already annihilated, is on the brink of destruction.

--St. George Tucker

Firearms stand next in importance to the Constitution itself.  They are the American people's liberty teeth, and keystone under independence.

George Washington

"Our Constitution was made for a moral and religious people.  It is wholly inadequate for the governance of any others."

John Adams