There Is Only One Spaceship Earth

When I was in the U.S. military, I learned a saying (often wrongly attributed to the Greek philosopher Plato) that only the dead have seen the end of war. Its persistence through history to this very moment should indeed be sobering. What would it take for us humans to stop killing each other with such vigor and in such numbers?

Song lyrics tell me to be proud to be an American, yet war and profligate preparations for more of the same are omnipresent here. My government spends more on its milita...