An invention has to make sense in the world it finishes in, not in the world it started.

Life is not a tour of gas stations.

The biggest mistake we see companies make when they first hit Twitter is to think about it as a channel to push out information.

The Lean Startup isn't just about how to create a more successful entrepreneurial business, it's about what we can learn from those businesses to improve virtually everything we do. I imagine Lean Startup principles applied to government programs, to healthcare, and to solving the world's great problems. It's ultimately an answer to the question: How can we learn more quickly what works, and discard what doesn't?

Web 2.0 is the business revolution in the computer industry caused by the move to the Internet as platform, and an attempt to understand the rules for success on that new platform.

Think of how Wikipedia works, how Amazon harnesses user annotation on its site, the way photo-sharing sites like Flickr are bleeding out into other applications. We're entering an era in which software learns from its users and all of the users are connected.

There's not a single business model, and there's not a single type of electronic content. There are really a lot of opportunities and a lot of options and we just have to discover all of them.