Founders At Work is a collection of interviews with the founders of successful high-tech companies. They have two interviews online, one with Woz and one with Joel Spolsky.
Some good quotes:
All the best things that I did at Apple came from (a) not having money and (b) not having done it before, ever. Every single thing that we came out with that was really great, I’d never once done that thing in my life.
I think what makes a good hack is the observation that you can do without something that everybody else thinks you need. To me, the most elegant hack is when somebody says, “These 2,000 lines of code end up doing the same thing as those 2 lines of code would do. I know it seems complicated, but arithmetically it’s really the same.” When someone cuts through a lot of crap and says, “You know, it doesn’t really matter.”
There is a remarkable similarity to the two interviews. Both emphasize simplicity and working under constraints.