Year after year after year, people write books about managing innovation or about leadership, for example, without ever going through the pain of saying, "This kind of leadership will cause this result in these circumstances and a very different result in those circumstances." This is academic malpractice of the worst kind.

Businesses want to think in terms of categories. Consumers want us to think in terms of their needs.

The innovations are far more important because the technology itself has now way to impact the world for good until it's embedded in the business model. Innovation it's the combination of the simplifying technology and the business model.

If you just look at the data, you are led to believe that things are getting better, rather than worse. That's why the fall is really precipitous, once you hit the ceiling.

In the study of management, unfortunately, many writers have been so anxious to articulate a theory in the form of, "If you do this, this will result," that they never go through this careful effort.

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.

The path I am trying so hard to follow is in fact the one that God my Father and His Son Jesus Christ want me to pursue. It has brought me deep happiness.