The dissident temperament has been present in all times and places, though only ever among a small minority of citizens. Its characteristic, speaking broadly, is a cast of mind that, presented with a proposition about the world, has little interest in where that proposition originated, or how popular it is, or how many powerful and credentialed persons have assented to it, or what might be lost in the way of property, status, or even life, in denying it. To the dissident, the only thing worth pondering about the proposition is, is it true? If it is, then no king’s command can falsify it; and if it is not, then not even the assent of a hundred million will make it true.

--John Derbyshire