Because, you know, resilience - if you think of it in terms of the Gold Rush, then you'd be pretty depressed right now because the last nugget of gold would be gone. But the good thing is, with innovation, there isn't a last nugget. Every new thing creates two new questions and two new opportunities.

I love my life. I love being an inventor.

It's perfectly healthy-encouraged, even- to have an idea tomorrow that contradicted your idea today

If you never want to be criticized, for goodness sake don't do anything new.

Strip malls are history.

Entrepreneurs must be willing to be misunderstood for long periods of time.

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