Regulatory fiat cannot create a market at a technologically interdependent interface. And by the same token, regulation and so-called monopoly power rarely prevail at modular interfaces between stages of value-added technology.

At the beginning of almost every industry, the available products and services are so expensive to own and complicated to use that only people with a lot of money and a lot of skill have access to them. A disruptive technology is an innovation that simplifies the product and makes it so affordable that a whole new population of people can now have one and use it at the beginning for simple applications, and then it improves to the point that it makes the old technology obsolete.

We have found that companies need to speak a common language, because some of the suggested ways to harness disruptive innovation are seemingly counter-intuitive. If companies don't have that common language, it is hard for them to come to consensus on a counter-intuitive course of action.

In 15 years from now half of US universities may be in bankruptcy ... in the end I'm excited to see that happen. So pray for Harvard Business School if you wouldn't mind.

I've concluded that the metric by which God will assess my life isn't dollars, but the individual people whose lives I've touched. I think that's the way it will work for us all. Don't worry about the level of individual prominence you have achieved; worry about the individuals you have helped become better people.

Intimate, loving, and enduring relationships with our family and close friends will be among the sources of the deepest joy in our lives.

Focus is scary—until you realize that it only means turning your back on markets you could never have anyway. Sharp focus on jobs that customers are trying to get done holds the promise of greatly improving the odds of success in new-product development.