Physics is really figuring out how to discover new things that are counterintuitive, like quantum mechanics. It's really counterintuitive.

The path to the CEO's office should not be through the CFO's office, and it should not be through the marketing department. It needs to be through engineering and design.

There have only been about a half dozen genuinely important events in the four-billion-year saga of life on Earth: single-celled life, multicelled life, differentiation into plants and animals, movement of animals from water to land, and the advent of mammals and consciousness.

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.

If you had to buy a new plane every time you flew somewhere, it would be incredibly expensive.

A battery by definition is a collection of cells. So the cell is a little can of chemicals. And the challenge is taking a very high-energy cell, and a large number of them, and combining them safely into a large battery.

People work better when they know what the goal is and why. It is important that people look forward to coming to work in the morning and enjoy working.