Where you are going to spend your time and your energy is one of the most important decisions you get to make in life.

In just a few hundred years, we will have to cover the entire surface of the Earth in solar cells if we want to continue to grow our energy usage.

If you're willing to change the world, let love be your energy.

I've realized that most of my best ideas have followed a good night's sleep.

I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.

There is plenty of time to sleep in the grave.