In 'Tarahumara' land, there was no crime, war or theft. There was no corruption, obesity, drug addiction, greed, wife-beating, child abuse, heart disease, high blood pressure, or carbon emissions. They didn't get diabetes, or depressed, or even old: 50-year-olds outran teenagers.

The Tarahumara would party like this all night, then rouse themselves the next morning to face off in a running race that could last not two miles, not two hours, but two full days. According to the Mexican historian Francisco Almada, a Tarahumara champion once ran 435 miles, the equivalent of setting out for a jog in New York City and not stopping till you were closing in on Detroit.

We run when we're scared, we run when we're ecstatic, we run away from our problems and run around for a good time.

Deny your nature, and it will erupt in some other, uglier way.

Even Charles Darwin, that human decoder ring of bizarre behavior, found the idea of saving a stranger's life to be a total head-scratcher.

The only way to truly conquer something, as every great philosopher and geneticist will tell you, is to love it.

We've got a motto here-you're tougher than you think you are, and you can do more than you think you can.