Rightwingnews.com has an interesting post on 40 classic conservative quotes. Organized alphabetically by author, the list spans from Sam Adams to Rush Limbaugh to George Washington.
A few that conservatives probably are especially fond of these days:
It is not strange… to mistake change for progress. — Millard Fillmore
I would remind you that extremism in the defense of liberty is no vice! And let me remind you also that moderation in the pursuit of justice is no virtue. — Barry Goldwater
From this arises an argument: whether it is better to be loved than feared. I reply that one should like to be both one and the other; but since it is difficult to join them together, it is much safer to be feared than to be loved when one of the two must be lacking. — Niccolo Machiavelli
People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf. — George Orwell