I don't want to make more friends. I have four kids, I have plenty of friends, and all the personal relationships I need.

You know in a startup, you only need three people. You need someone who can make something. You need someone who can sell it. And you need someone to collect the money. That's the only three roles in a startup. So which one are you?

"(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.

When you enchant people, your goal is not to make money from them or to get them to do what you want, but to fill them with great delight.

Steve [Jobs] proves that it's OK to be an asshole... He just has a different OS.

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

People are free or cheap. Marketing: using Twitter or blogs. Cheap or free. Infrastructure: call up Amazon, call up Rackspace, terabytes of data in the clouds, thousand dollars, two thousand dollars.