When I look at efforts to create change in big companies over the past 10 years, I have to say that there's enough evidence of success to say that change is possible - and enough evidence of failure to say that it isn't likely. Both of those lessons are important.

We tend to think that, in a traditional organisation, people are producing results because management wants results, but the essence of a high-quality organisation is people producing results because they want the results. It's puzzling we find that hard to understand, that if people are really enjoying, they'll innovate, they'll take risks, they'll have trust with one another because they are really committed to what they're doing and it's fun

Small changes can produce big results - but the areas of highest leverage are often the least obvious.

Sharing knowledge is not about giving people something, or getting something from them. That is only valid for information sharing. Sharing knowledge occurs when people are genuinely interested in helping one another develop new capacities for action; it is about creating learning processes.

Many children struggle in schools... because the way they are being taught is incompatible with the way they learn.

New insights fail to get put into practice because they conflict with deeply held internal images of how the world works...images that limit us to familiar ways of thinking and acting. That is why the discipline of managing mental models - surfacing, testing, and improving our internal pictures of how the world works - promises to be a major breakthrough for learning organizations.

Commitment to the truth...means a relentless willingness to root out the ways we limit or deceive ourselves from seeing what is, and to continually challenge our theories of why things are the way they are. It means continually broadening our awareness. It also means continually deepening our understanding of the structures underlying current events.