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.

Weighing too much on someone's talent and not someone's personality. I think it matters whether someone has a good heart.

I feel very strongly that SpaceX would not have been able to get started, nor would we have made the progress that we have, without the help of NASA.

You shouldn't do things differently just because they're different. They need to be... better.

Some people don't like change, but you need to embrace change if the alternative is disaster.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

The reality is gas prices should be much more expensive then they are because we're not incorporating the true damage to the environment and the hidden costs of mining oil and transporting it to the U.S. Whenever you have an unpriced externality, you have a bit of a market failure, to the degree that eternality remains unpriced.