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

Evolution is a theory, and it’s a theory that you can test. We’ve tested evolution in many ways. You can’t present good evidence that says evolution is not a fact.

I used to play ultimate Frisbee, and I just got a reputation for making popcorn at parties. I don’t mean to brag on myself, but I make the popcorn in the pot, and it comes out fine every time.

I feel that I’ve often pointed out that there are countless aspects of life and nature that scientists and scientific thinkers cannot explain.

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 best thing humans beings have ever come up with. And if it isn’t, science will fix it.

Humor is everywhere in that there’s irony in just about anything a human does.

But as the cerebellum degrades with age, so does the quality of memories. The memories are there, but they’re not as good.

The world’s going to change climatically. We just want to control the change. We want to have a high quality of life for billions of people as we pass through this era.

The US Navy has several people on every ship that can navigate by the stars. They don’t fool with that.

I stand by my assertions that although you can know what happens to any individual species that you modify, you cannot be certain what will happen to the ecosystem.

NASA is an engine of innovation and inspiration as well as the world’s premier space exploration agency, and we are well served by politicians working to keep it that way, instead of turning it into a mere jobs program, or worse, cutting its budget.

Without an end to the burning of fossil fuels, coal especially, most of us will live shorter lives. I’m hopeful, but very, very concerned.

Tax dollars intended for science education must not be used to teach creationism as any sort of real explanation of nature, because any observation or process of inference about our origin and the nature of the universe disproves creationism in every respect.

My father was a very good Boy Scout. He was very skilled with knots, and he showed me how to tie a bow tie.

If you just take a single human and put him or her in the forest he or she might not do very well without some sort of education which he got or she got from some tribe.

When we see the shadow on our images, are we seeing the time 11 minutes ago on Mars? Or are we seeing the time on Mars as observed from Earth now? It’s like time travel problems in science fiction. When is now; when was then?

Especially in recent years, the more and more we understand what we are doing, the more we have the science to tell us what we’re doing, the fact that we continue to do it without taking steps to address it strikes me as, among many other things, irreverent in an extreme.

Psychologically, you have to have confidence in yourself and this confidence should be based on fact.

The will of God is exactly what we would do if we knew all the facts.

If comedy is about surprises, about tension, there’s a lot of tension and surprise there, in the fact that people are expecting this to be natural.

They thought they were Mick Jagger and Jerry Hall. In fact, they were more like Tom and Jerry

The really authentic thing about humor is that anyone can pretend to be serious. Anyone who’s ever had a job – in fact, we’re pretending to be serious now, more or less.

The successful memoirist [blogger] respects facts, uses them accurately, rigorously represses the human impulse to lie or embellish, but knows that truth is both different from facts and greater than facts, and not always their sum.

Complicated lives and heaps of possessions don’t necessarily bring happiness; in fact, they can bring the opposite.