I'm going to tell you two stories about smoking. The first comes from my high school history teacher, Raoul Meyer, who also writes Crash Course. When I was a senior in high school, he walked up to me and he said, I want you to keep smoking. I want you to smoke until the day after your 65th birthday, and then I want you to die so that I collect all of your social security. That inspired me, Mr. Meyer, to quit smoking just eight short years later. Here is an amazing statistic. Cigarettes were handed out to American service men during World War II, and more soldiers who started smoking during the war died from smoking than died from the war.