I've not seen an effective manager or leader who can't spend some fraction of time down in the trenches... If they don't do that they get out of touch with reality, and their whole thought and management process becomes abstract and disconnected.

It's hard to find things that won't sell online.

There are two ways to extend a business. Take inventory of what you're good at and extend out from your skills. Or determine what your customers need and work backward, even if it requires learning new skills. Kindle is an example of working backward.

Seek instant gratification - or the elusive promise of it - and chances are you'll find a crowd there ahead of you.

The most important single thing is to focus obsessively on the customer. Our goal is to be earth's most customer-centric company.

If you double the number of experiments you do per year you're going to double your inventiveness.

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.