World War I broke out largely because of an arms race, and World War II because of the lack of an arms race.
“While advances in scientific research have led to some new and exciting treatments that have enlarged and enhanced the quality and length of human life, we must not lose sight as to what we are trying to accomplish.”
“And, hey, I'm not under the illusion that everything's just going to be hunky-dory work wise forever. I've never been under that illusion. Things could go away tomorrow.”