Virtually all ideologues, of any variety, are fearful and insecure, which is why they are drawn to ideologies that promise prefabricated answers for … - Jane Jacobs

Writing, printing, and the Internet give a false sense of security about the permanence of culture.

The other threat to the security of our tradition, I believe, lies at home. It is the current fear of radical ideas and of people who propound them. I do not agree with the extremists of either the left or the right, but I think they should be allowed to speak and to publish, both because they themselves have, and ought to have, rights, and once their rights are gone, the rights of the rest of us are hardly safe. Extremists typically want to squash not only those who disagree with them diametrically, but those who disagree with them at all. It seems to me that in every country where extremists of the left have gotten sufficiently in the saddle to squash the extremists of the right, they have ridden on to squash the center or terrorize it also. And the same goes for extremists of the right. I do not want that to happen in our country.

The salient mystery of Dark Ages sets the stage for mass amnesia. People living in vigorous cultures typically treasure those cultures and resist any threat to them. How and why can a people so totally discard a formerly vital culture that it becomes vitally lost?