"Danger lies not in what we don't know but in what we think we know that just ain't so."
I used to see a sig-line on a Plastic profile, and debated over it a few times: "The only thing a free man can be forced to do is die." That ends up being the slogan writ in fire that keeps me going -- striving to find new and better ways to articulate how painfully, insultingly wrong it is.
It's trivially true, at best, and yet to most people with enough imaginagation to get out of bed in the morning, it's so plainly irrelevant to actual human lives in the world. In that, it serves as another illustration of the fact that the trivially true is more or less meaningless without some actual understanding of what it would feel like to have it be true for you.
Of course, to the mind that would think up such a slogan, there's no trumping the trivial truth. Such minds think that they actually operate on the rational principles that they espouse. Which makes hard-core libertarian rationalists a ripe target for many types of confidence game....