For all our failings, despite our limitations and fallibilities, we humans are capable of greatness. - Carl Sagan

President Ronald Reagan, who spent World War II in Hollywood, vividly described his own role in liberating Nazi concentration camp victims. Living in the film world, he apparently confused a movie he had seen with a reality he had not. On many occasions in his Presidential campaigns, Mr. Reagan told an epic story of World War II courage and sacrifice, an inspiration for all of us. Only it never happened; it was the plot of the movie A Wing and a Prayer — that made quite an impression on me, too, when I saw it at age 9. Many other instances of this sort can be found in Reagan's public statements. It is not hard to imagine serious public dangers emerging out of instances in which political, military, scientific or religious leaders are unable to distinguish fact from vivid fiction.

I do not imagine that many people in the fifteenth century ever wondered if they were living in the Italian Renaissance.

The astonishing fact is that similar mathematics applies so well to planets and to clocks. It needn’t have been this way. We didn’t impose it on the Universe. That’s the way the Universe is. If this is reductionism, so be it.