To be wealthy and honored in an unjust society is a disgrace.

Our revenue laws have operated in many ways to the unfair advantage of the few, and they have done little to prevent an unjust concentration of wealth and economic power.

For the first time we're allowing developers who don't work at Facebook to develop applications just as if they were. That's a big deal because it means that all developers have a new way of doing business if they choose to take advantage of it. There are whole companies that are forming whose only product is a Facebook Platform application.

Being an entrepreneur isn't really about starting a business. It's a way of looking at the world: seeing opportunity where others see obstacles, taking risks when others take refuge.

It's very important for entrepreneurs to be realistic. So if you believe on that first day while you're writing the business plan that there's a 70 percent chance that the whole thing will fail, then that kind of relieves the pressure of self-doubt.

I'm convinced that about half of what separates successful entrepreneurs from the non-successful ones is pure perseverance.