"(Big name research firm) says our market will be $50 billion in 2010." Every entrepreneur has a few slides about how the market potential for his segment is tens of billions. It doesn't matter if the product is bar mitzah planning software or 802.11 chip sets. Venture capitalists don't believe this type of forecast because it's the fifth one of this magnitude that they've heard that day. Entrepreneurs would do themselves a favor by simply removing any reference to market size estimates from consulting firms.

Revolutionary leaders have to care more about what they think of themselves than what the world thinks of them.

Writing a book is as different from digital curation as night and day. Digital curation is a series of split-second decisions: good/no good. It can even be done algorithmically. Writing is process-intensive activity.

When you're a good person, good things happen to you. You shouldn't be a good person with the expectation of therefore deserving good things, but in its purest form, I believe when you do good, good comes back to you.

What you learn in school is the opposite of what happens in the real world. In school, you're always worried about minimums. You have to reach 20 pages or you have to have so many slides or whatever. Then you get out in the real world and you think, 'I have to have a minimum of 20 pages and 50 slides.

The desire to change the world is a tremendous advantage as you travel down the difficult path ahead because focusing on a lofty goal is more energizing and attracts more talent than simply making a buck.

If you're an entrepreneur and you think that the president makes a difference to your business, you should stay at your current job.