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

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.

What new technology does is create new opportunities to do a job that customers want done.

You have to pay attention to money, but it shouldn't be about the money.

When you have to prove the value of your ideas by persuading other people to pay for them, it clears out an awful lot of woolly thinking.

Programming is how we talk to the machines that are increasingly woven into our lives. If you aren't a programmer, you're like one of the unlettered people of the Middle Ages who were told what to think by the literate priesthood. We had a Renaissance when more people could read and write; we'll have another one when everyone programs.

Share what you do profusely, because it will be remixed by others into something new, rich and strange.