Even from the most horrible things we can learn great lessons. From the threat of nuclear destruction we can learn several things about how to rearrange the world for the good: • You don’t need great armies. • It can take only one simple act. • You don’t have to understand how it works—just what button to press. • It doesn’t matter who does it, as long as he presses the right button. • From the smallest things come the biggest changes. • Tremendous...