In his fierce, bold determination to see the lives of modern-day slaves up close, Benjamin Skinner reminds me of the British abolitionist of two hundred years ago, Zachary Macaulay, who once traveled on a slave ship across the Atlantic, taking notes. Skinner goes everywhere, from border crossings to brothels to bargaining sessions with dealers in human beings, to bring us this vivid, searing account of the wide network of human trafficking and servitude which spans today's globe.

The first World War in so many ways shaped the 20th century and really remade our world for the worse.

Some 2,800 Americans went to Spain [during the Spanish Civil War], and it was, by far, the largest number of Americans before or since who've ever joined somebody else's civil war. I think they were primarily people who were deeply alarmed by the menace of fascism. They saw this on the horizon. I quote one volunteer, Maury Colow of New York, who said, "for us it was never Franco, it was always Hitler."

How many really great writers are there who are totally non-political? You can hear the French Revolution in the poetry of [Percy Bysshe] Shelly and [John] Wordsworth; you can sense the vast inequalities of Tsarist Russia in [Anton] Chekhov and [Lev] Tolstoy.

Things have gotten openly more extreme in the last few years. I was lecturing in Hungary, whose prime minister, Victor Orban, is an example of this trend. All over Budapest, statues have been replaced, museum exhibits have been redone, to turn ethnic Hungarians, not Jews, into the prime victims of the Germans during World War II. Five years ago, who would have thought this possible?

Speaking of Germany in 1933, I don't think you can remove yourself from politics when, in so many countries - the United States, Poland, Hungary, and many others - you've got politicians in power or vying for power who are taking tactics and elements of their appeal from the playbook of fascism.

In Canada, the U.S. and most of Europe it may be easy to take political stands, this is something for which you can be forced to pay with your life, or your freedom, in many other parts of the world, from Iran to Russia to Pakistan to China.