What we want to be is something completely new. There is no physical analog for what Amazon.com is becoming.

Real estate is the key cost of physical retailers. That's why there's the old saw: location, location, location.

If you can't tolerate critics, don't do anything new or interesting.

I don't want to use my creative energy on somebody else's user interface.

If you're competitor-focused, you have to wait until there is a competitor doing something. Being customer-focused allows you to be more pioneering.

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.