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1775: "I know not what course others may take; but as for me, give me liberty or give me death!" -- Patrick Henry
2005: "None of your civil liberties matter much after you’re dead." -- Sen. John Cornyn (R-Texas)
(Of course, as has been pointed out by many folks before, it's not even really a trade-off between security and freedom. Giving away our freedoms doesn't make us safer.)