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

A lot of them complain because they say the word denial puts them in the same bin as holocaust deniers. That's too bad. But the thing is, they do have something in common: a denial of evidence and of scientific consensus.

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.'

I'm tired of ignorance held up as inspiration.

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

I still hear some people say that science takes the wonder out of life. Those people are utterly wrong. Science takes us to the wonder

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