Ideas and products and messages and behaviors spread just like viruses do.

If you're in business it's both a promise and a warning. It says that sometimes little things can cause some little guy to have an overnight success.

People are experience-rich and theory-poor.

We sometimes think of being good at mathematics as an innate ability. You either have "it" or you don't. But to Schoenfeld, it's not so much ability as attitude. You master mathematics if you are willing to try.

I'm totally engaging in cultural stereotyping, no question about it. But I think it's OK because I'm doing it for a reason, for a good reason.

People who are busy doing things - as opposed to people who are busy sitting around, like me, reading and having coffee in coffee shops -don't have opportunities to kind of collect and organize their experiences and make sense of them.

Six degrees of separation doesn't mean that everyone is linked to everyone else in just six steps. It means that a very small number of people are linked to everyone else in a few steps, and the rest of us are linked to the world through those special few.