"The major problem with the opportunists is that by confining themselves strictly to gradual and "practical" programs, programs that stand a good chance of immediate adoption, they are in grave danger of completely losing sight of the ultimate objective, the libertarian goal. He who confines himself to calling for a two percent reduction in taxes helps to bury the ultimate goal of abolition of taxation altogether. By concentrating on the immediate means, he helps liquidate the ultimate goal, and therefore the point of being a libertarian in the first place. If libertarians refuse to hold aloft the banner of the pure principle, of the ultimate goal, who will? The answer is no one."
--Murry Rothbard http://mises.org/daily/1709