When you're dealing with the universe, ignorance can be deadly.

If a little kid ever asks you just why the sky is blue, you look him or her right in the eye and say, 'It's because of quantum effects involving Rayleigh scattering combined with a lack of violet photon receptors in our retinae.'

How do you convince someone they're not thinking clearly, when they're not thinking clearly? What we're actually saying is no magic, no afterlife, no higher moral authoritative father-figure, no security, and no happy ever after. This is a tough sell.

Not everything that’s cool is science, but everything in science is cool.

However, science isn't just about showing when you're right; it's also about showing when you're wrong.

I'm tired of ignorance held up as inspiration.

Humanity and life are reflected in the stars, and the Universe itself is poetry.