The key to heroism is two things. A: you've got to act when other people are passive. B: you have to act socio-centrically, not egocentrically. And I want to end with the story that some of you know, about Wesley Autrey, New York subway hero. Fifty-year-old African-American construction worker. He's standing on a subway in New York. A white guy falls on the tracks. The subway train is coming. There's 75 people there. You know what? They freeze. He's got a reason not to get involved. He's black, the guy's white, and he's got two little kids. Instead, he gives his kids to a stranger, jumps on the tracks, puts the guy between the tracks, lies on him, the subway goes over him. Wesley and the guy -- 20 and a half inches height. The train clearance is 21 inches. A half an inch would have taken his head off. And he said, "I did what anyone could do," no big deal to jump on the tracks.