Yup, I read Guy Kawasaki's "Art of the Start" where he says you should make a startup and change the world. It's incredibly frightening to think that, and I wouldn't recommend it for anyone.

Very few people change the world in the sense the author means (Mark Zuckerberg, Larry/Sergey, loads of scientists, etc).

But if you can set out to change someones world, I think you'll find your work more interesting and rewarding.