There are plenty of things that are unknown, but are assumed reasonably to exist, even in the most basic sciences. Maybe 90 percent of the mass-energy in the universe is called "dark," because nobody knows what it is.

In fact, some leaders come right out and say it. Mario Draghi the president of the European Central Bank had an interview with the Wall St Journal in which he said the social contract's dead; we finally got rid of it.

Students who acquire large debts putting themselves through school are unlikely to think about changing society. When you trap people in a system of debt, they can't afford the time to think.

You can go into the Library of Congress and find information on just about anything, but that doesn't do you much good unless you know what you are looking for.

Science talks about very simple things, and asks hard questions about them. As soon as things become too complex, science can't deal with them... But it's a complicated matter: Science studies what's at the edge of understanding, and what's at the edge of understanding is usually fairly simple. And it rarely reaches human affairs. Human affairs are way too complicated.

I'm sorry to say it has some historical analogs. It's kind of reminiscent of what happened in Germany in the late Weimar years.

We don't use the term 'working class' here because it's a taboo term. You're supposed to say 'middle class,' because it helps diminish the understanding that there's a class war going on.