That's my lesson for taking a vacation: vacation will kill you.

For all the supporters of Tesla over the years, and it's been several years now and there have been some very tough times, I'd just like to say thank you very much. I deeply appreciate the support, particularly through the darkest times.

Being an entrepreneur is like eating glass and staring into the abyss of death.

Life is too short for long-term grudges.

I always see what’s... wrong. Would you want that? When I see a car or a rocket or spacecraft, I only see what’s wrong. I never see what’s right. It’s not a recipe for happiness.

I think that's an important thing to do, to really pay attention to negative feedback, and solicit it, particularly from friends. This may sound like simple advice, but hardly anyone does that, and it's incredibly helpful.

It's obviously tricky to convert cellulose to a useful biofuel. I think actually the most efficient way to use cellulose is to burn it in a co-generation power plant. That will yield the most energy and that is something you can do today.