There'll always be serendipity involved in discovery.

The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil.

We've done price elasticity studies, and the answer is always that we should raise prices. We don't do that, because we believe -- and we have to take this as an article of faith -- that by keeping our prices very, very low, we earn trust with customers over time, and that that actually does maximize free cash flow over the long term.

I love my life. I love being an inventor.

Though we are optimistic, we must remain vigilant and maintain a sense of urgency.

People who are right most of the time are people who change their minds often

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.