I went to Princeton specifically to study physics.

If you decide that you're going to do only the things you know are going to work, you're going to leave a lot of opportunity on the table.

The balance of power is shifting toward consumers and away from companies The right way to respond to this if you are a company is to put the vast majority of your energy, attention and dollars into building a great product or service and put a smaller amount into shouting about it, marketing it.

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

In the old world, you devoted 30% of your time to building a great service and 70% of your time to shouting about it. In the new world, that inverts

The killer app that got the world ready for appliances was the light bulb. So the light bulb is what wired the world. And they weren't thinking about appliances when they wired the world. They were really thinking about - they weren't putting electricity into the home. They were putting lighting into the home.

I strongly believe that missionaries make better products. They care more. For a missionary, it's not just about the business. There has to be a business, and the business has to make sense, but that's not why you do it. You do it because you have something meaningful that motivates you.