For decades, we've been trying to cook up the building blocks of life, in the lab, and recreate the origins of it all, but the parts didn't seem to fit together, until now.

The methods and tools of science perennially breach barriers, granting me confidence that our epic march of insight into the operations of nature will continue without end.

In America, there are people who don't read science fiction but still think about tomorrow, so it's not only the force of science-fiction that makes you a tomorrow thinker.

Politics will take whatever shape it needs for people to get elected. But at the end of the day, the population remains and that's really, as an educator, who I care about.

So maybe part of our formal education should be training in empathy. Imagine how different the world would be if, in fact, that were 'reading, writing, arithmetic, empathy.'

You get to say that the Earth is flat because we live in a country that guarantees your free speech. But it's not a country that guarantees that anything you say is correct.

I try to show the public that chemistry, biology, physics, astrophysics is life. It is not some separate subject that you have to be pulled into a corner to be taught about.

A conspiracy theorist is a person who tacitly admits that they have insufficient data to prove their points. A conspiracy is a battle cry of a person with insufficient data.

If it's a new planet, sign me up. I'm tired of driving around the block, boldly going where hundreds have gone before in orbit around earth-give me a place to go and I'll go.

Mars once was wet and fertile. It's now bone dry. Something bad happened on Mars. I want to know what happened on Mars so that we may prevent it from happening here on Earth.

Here's what I'm wondering: if, digitally, you can remove red-eye, smooth over wrinkles, make people look thinner, then why don't we have the technology to make me sing better?

It's always interesting just to see how the human mind is relating to the natural universe, and what we try to make of it just so we can believe we understand what's going on.

I'm not as famous as Stephen Hawking, but certainly in the U.S., I have a very high profile for a scientist. It is an awesome responsibility, one that I don't shoulder lightly.

Just think for how long humanity was controlled by mystical, magical thinking - the diseases and suffering that led to. We managed to survive, but just barely. It wasn't pretty.

To the scientist, the universality of physical laws makes the cosmos a marvelously simple place. By comparison, human nature-the psychologist's domain-is infinitely more daunting.

Here's something that intrigues me: If you have faith, you believe regardless of the evidence, yet if there's ever evidence to support faith, everyone goes to it and points to it.

I said that if an alien came to visit, I'd be embarrassed to tell them that we fight wars to pull fossil fuels out of the ground to run our transportation. They'd be like, 'What?'

You can't come away with this cosmic perspective thinking that you are better than others and want to fight. That's why you'll never have astrophysicists leading nations into war.

Today, scientists sound the alarm on other environmental dangers. Vested interests still hire their own scientists to confuse the issue. But in the end, nature, will not be fooled.

Curiosity is a self-driven motivation to explore and to learn. Learning is like... you know, you have to take your medicine. And that is what it has become. And that's unfortunate.

So much of what we understand comes from knowing what something is and what that something used to be, which allows us to figure out, or at least imagine, what happened in between.

For me, the most fascinating interface is Twitter. I have odd cosmic thoughts every day and I realized I could hold them to myself or share them with people who might be interested.

Scientists are human. We have our blind spots and prejudices. Science is a mechanism designed to ferret them out. Problem is we aren't always faithful to the core values of science.

Astronauts are the only kind of celebrity I know who can have a line of people waiting for their autograph, even if the line of people does not know in advance the astronaut's name.

If there's some kind of rock star status, would I be irresponsible if I didn't somehow use it for a continued greater good? I'm always involved in some way with reaching the public.

For most of human civilization, the pace of innovation has been so slow that a generation might pass before a discovery would influence your life, culture or the conduct of nations.

I'm often asked by parents what advice can I give them to help get kids interested in science? And I have only one bit of advice. Get out of their way. Kids are born curious. Period.

Unlike what you may be told in other sectors of life, when observing the universe, size does matter, which often leads to polite ‘telescope envy’ at gatherings of amateur astronomers.

I don't even understand why I have 1.7 million Twitter followers. Every day, I want to remind them and say, "Do you realize I'm an astrophysicist? Do you know what you're doing here?"

We are not simply in the universe, we are part of it. We are born from it. One might even say we have been empowered by the universe to figure itself out - and we have only just begun.

Space is the ultimate frontier. I think when people historically thought of the frontier, there was where you were living and then there was some edge beyond which no one had explored.

Newton, Einstein, and every other great scientist in history...They all made mistakes. Of course they did. They're human! Science is a way to keep from fooling ourselves and each other.

I don't ever tell people what to do! Even if it seems and feels that way sometimes, I don't think I should tell a person how to spend their money. I try not to tell people what to read.

There's something about witnessing something in the sky that makes people think they're seeing something unique or special. I don't really understand the psychology of it, to be honest.

A scientific discovery is also a religious discovery. There is no conflict between science and religion. Our knowledge of God is made larger with every discovery we make about the world.

I can't tell you how many people say they were turned off from science because of a science teacher that completely sucked out all the inspiration and enthusiasm they had for the course.

All tweets are tasty. Any tweet anybody writes is tasty. So, I try to have each tweet not simply be informative, but have some outlook, some perspective that you might not otherwise had.

The only way you can invent tomorrow is if you break out of the enclosure that the school system has provided for you by the exams written by people who are trained in another generation.

I wonder if, in fact, we have been observed by aliens and upon close examination of human conduct and human behavior they have concluded that there is no sign of intelligent life on Earth.

All the great advances in cinema came about from technology. The 3-D camera was not invented by a movie director. The new industries are driven by the innovations in science and technology.

Kids should be allowed to break stuff more often. That's a consequence of exploration. Exploration is what you do when you don't know what you're doing. That's what scientists do every day.

Science is a philosophy of discovery; intelligent design is a philosophy of ignorance... Something fundamamental is going on in people's minds when they confront things they don't understnd.

I'm a little fatigued of adults saying we've got to worry about the kids. And these are the same adults that don't know science and are running things and wielding resources and legislation.

Why can't Pluto be a planet? Some people like Pluto. And if it doesn't exist then they don't have a favorite planet. Right? Please write back but not in cursive because I can't read cursive.

The history of exploration has never been driven by exploration. But Columbus himself was a discoverer. So was Magellan. But the people who wrote checks were not. They had other motivations.

There are as many atoms in each molecule of your DNA as there are stars in the typical galaxy. This is true for dogs, and bears, and every living thing. We are, each of us, a little universe.

In the animal kingdom, one of the keys to survival is to outwit your enemies. And when you're surrounded by carnivores, one of the best strategies is to fade into the background and disappear.

The universe is almost 14 billion years old, and, wow! Life had no problem starting here on Earth! I think it would be inexcusably egocentric of us to suggest that we're alone in the universe.

Although I'm not actually embarrassed by this, I tend not to read books that have awesome movies made from them, regardless of how well or badly the movie represented the actual written story.

For me, I am driven by two main philosophies, know more today about the world than I knew yesterday. And along the way, lessen the suffering of others. You'd be surprised how far that gets you.

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