I say to the grownups, if you want to deny evolution and live in your world, that's completely inconsistent with the world we observe, that's fine. But don't make your kids do it. Because we need them. We need scientifically literate voters and taxpayers for the future. We need engineers that can build stuff and solve problems.

The natural world is a package deal; you don't get to select which facts you like and which you don't.

People confuse the word cynicism with the word skepticism. One is “you’re not gonna pay attention to anything, think everything’s screwed up, nothing’s ever gonna work out right”, that’s cynicism. But skepticism is, “you’re presented with evidence and you do your best to draw conclusions based on that”. So, as the saying goes, Bill Nye, do you believe in ghosts? No. However, I would love to see one. Bring it on. I’m open minded to the idea, but the more I look into it in a skeptical frame of thinking, the less likely it seems.

If NASA is to reach beyond the Moon and someday reach Mars, it must be relieved of the burden of launching people and cargo to low earth orbit. To do that, we must invest more in commercial spaceflight.

Our goal in science is to discover universal laws of nature. If one's faith requires one to abandon or ignore natural laws, well, that person is going to have trouble reconciling religion and science. Otherwise, there is no any conflict.

Science is the key to our future, and if you don't believe in science, then you're holding everybody back.

In another couple centuries I'm sure that worldview won't even exist. There's no evidence for it.