One contribution scientists can and should make is to be clear and explicit about the limits of scientific understanding, a matter that is particularly important in societies where people are trained to defer to alleged experts.

It's commonly assumed that the emergence of language was a key element of the great leap. We of course know very little about the sociopolitical conditions that existed at the time, but there's no scenario I can think of that suggests how a sudden change in these conditions could have led to the emergence of language.

If you want to talk about distributing substances that are lethal, . . . let's be serious. Tobacco is far ahead of anything else. Alcohol is second.

It's a lesser-known story, but the Japanese government (after the Russian-Nazi pact, which split Poland) did allow Polish Jews to come to Japan, with the expectation that they would then be sent to the United States. But they weren't accepted, so they stayed in Japan.

There's never been anything like the so-called Vietnam Syndrome: it's mostly a fabrication.

If something comes along that you don't like, there are a few sort of four-letter words that you can use to push it out of the sphere of discussion. If you were in a bar downtown, they might have different words, but if you're an educated person what you use are complicated words like "conspiracy theory" or "Marxist." It's a way of pushing unpleasant questions off the agenda so that we can continue in our own happy ideology.

For fifty years, we heard NATO is necessary to save Western Europe from the Russian hordes, you know the slave state, stuff I was taking about. In 1990-91, no Russian hordes. Okay, what happens? Well there are actually visions of the future system that were presented. One was [Mikhail] Gorbachev. He called for a Eurasian security system, with no military blocs. He called it a Common European Home. No military blocs, no Warsaw Pact. Just an integrated security system with no conflicts.Now the other vision was presented by George Bush, this is the "statesman".