In physics, opinions don't matter, only demonstrated experiments. The day the fellow succeeds, if ever, he won't need anybody else's opinion.

If you love what you do, you'll be your best at it compared to anything else you might have chosen as a career. Or at least you will love it more, and you won't lead a depressed day of your life.

The tenacity of life is mind-boggling. We keep finding it where no one thought it could be.

I remain unconvinced that anything other than rapid decomposition is the fate of my body and mind after death.

Even with all our technology and the inventions that make modern life so much easier than it once was, it takes just one big natural disaster to wipe all that away and remind us that, here on Earth, we're still at the mercy of nature.

I dream of a world where the truth is what shapes people's politics, rather than politics shaping what people think is true.

No one is dumb who is curious.