“The greatest threat to freedom is the absence of criticism.”

“With each passing day, I become more and more convinced that the greatest threat to American freedom is the United States government.”

“Political freedom means the absence of coercion of a man by his fellow men. The fundamental threat to freedom is power to coerce, be it in the hands of a monarch, a dictator, an oligarchy, or a momentary majority. The preservation of freedom requires the elimination of such concentration of power to the fullest possible extent and the dispersal and distribution of whatever power cannot be eliminated — a system of checks and balances.”

“What embitters the world is not excess of criticism, but an absence of self-criticism.”

“Tyranny anywhere is a threat to freedom everywhere.”

“Voter apathy was, and will remain the greatest threat to democracy.”