piece in the New York Times Magazine, "Has the ‘Libertarian Moment’ Finally Arrived?"
Again, it's from David Frum, this time on libertarianism (my emphasis):
“It’s a completely closed and airless ideological system that doesn’t
respond well to reality. Libertarians are like Marxists in
that they have prophets like von Mises and Hayek, and they quote from
their holy scripture, and they don’t have to engage.”