If you seek only easy problems to solve, then ultimately, there'll be nothing about you to distinguish yourself from others.

When you innovate, the jobs can't go overseas because other countries haven't figured out how to do it yet.

The first colony on Mars is not going to be built by a private company. How are you going to make money? You're not.

The StarTalks - while kids can watch them, they're actually targeted at adults. Because adults outnumber kids five to one, and adults vote, and adults wield resources, and adults are heads of agencies. So if we're going to affect policy, or affect attitudes, for me, the adults have always been the target population.

And I don't care what else anyone has ever told you, the Sun is white, not yellow. Human color perception is a complicated business, but if the Sun were yellow, like a yellow lightbulb, then white stuff such as snow would reflect this light and appear yellow-a snow condition confirmed to happen only near fire hydrants.

The theory of evolution, like the theory of gravity, is a scientific fact.

Newton came up with Newton's laws of motion and gravity. They worked. They were working.