Social media and the Internet haven't changed our capacity for social interaction any more than the Internet has changed our ability to be in love or our basic propensity to violence, because those are such fundamental human attributes.

It is well to look around at whom, and not just what, surrounds us. Population structure will change everything. Our health, wealth, and peace depend on it.

My entire youth was spent with an incredibly ill parent... I don't think you can grow up that way and not be marked by that experience.

I like to have met someone in real life before being their Facebook friend.

We wanted Nike to be the world's best sports and fitness company. Once you say that, you have a focus. You don't end up making wing tips or sponsoring the next Rolling Stones world tour.

Exercise is labor without weariness.

I love to dance, and I love to see people dance. It is good exercise. It gives you a kind of energy.

Greenhouse gas pollution, through its contribution to global climate change, presents a significant threat to Americans' health and to the environment upon which our economy and security depends.