Dreams about the future are always filled with gadgets.

Do you realize that if you fall into a black hole, you will see the entire future of the Universe unfold in front of you in a matter of moments and you will emerge into another space-time created by the singularity of the black hole you just fell into?

You can't have people making decisions about the future of the world who are scientifically illiterate. That's a recipe for disaster. And I don't mean just whether a politician is scientifically literate, but people who vote politicians into office.

To make any future that we dreamt up real requires creative scientists, engineers, and technologists to make it happen. If people are not within your midst who dream about tomorrow - with the capacity to bring tomorrow into the present - then the country might as well just recede back into the cave because that's where we're headed.

You have not fully expressed your power as a voter until you have scientific literacy in topics that matter for future political issues.

I think the greatest of people that have ever been in society, they were never versions of someone else. They were themselves.

Space exploration is a force of nature unto itself that no other force in society can rival.

I think the greatest of people in society carved niches that represented the unique expression of their combinations of talents, and if everyone had the luxury of expressing the unique combinations of talents in this world, our society would be transformed overnight.

We live in the kind of society where, in almost all cases, hard work is rewarded.

When an industry matures, it means it's not advancing, and of course the jobs go overseas. That's the obligation of the multi-national corporation: to put the factory where it can make the widget as cheap as possible. Don't get angry when a corporation does that; we've all bought into this concept. We live in a capitalistic society.

I get enormous satisfaction from knowing I'm doing something for society.

We have bred multiple generations of people who have not experienced knowing where you are the moment a news story broke, with that news story being great and grand and something that elevates society instead of diminishes it.

If you're going to lead a space frontier, it has to be government; it'll never be private enterprise. Because the space frontier is dangerous, and it's expensive, and it has unquantified risks. And under those conditions, you cannot establish a capital-market evaluation of that enterprise. You can't get investors.

I'm perennially intrigued how people who lead largely evidence-based lives can, in a belief-based part of their mind, be certain that an invisible, divine entity created an entire universe just for us, or that the government is stockpiling space aliens in a secret desert location.

I know of no time in human history where ignorance was better than knowledge.

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.

The history of exploration across nations and across time is not one where nations said, 'Let's explore because it's fun.' It was, 'Let's explore so that we can claim lands for our country, so that we can open up new trade routes; let's explore so we can become more powerful.'

So the history of discovery, particularly cosmic discovery, but discovery in general, scientific discovery, is one where at any given moment, there's a frontier. And there tends to be an urge for people, especially religious people, to assert that across that boundary, into the unknown, lies the handiwork of God. This shows up a lot.

Private enterprise in the history of civilization has never led large, expensive, dangerous projects with unknown risks. That has never happened because when you combine all these factors, you cannot create a capital market valuation of that activity.

If the only time you think of me as a scientist is during Black History Month, then I must not be doing my job as a scientist.

If you only think of me during Black History Month, I must be failing as an educator and as an astrophysicist.

Fortunately, there's another handy driver that has manifested itself throughout the history of cultures. The urge to want to gain wealth. That is almost as potent a driver as the urge to maintain your security. And that is how I view NASA going forward - as an investment in our economy.

Even with all our technology and the inventions that make modern life so much easier than it once was, it takes just one big natural disaster to wipe all that away and remind us that, here on Earth, we're still at the mercy of nature.

When we see animals doing remarkable things, how do we know if we're simply seeing tricks or signs of real intelligence? Are talented animals just obeying commands, or do they have some kind of deeper understanding? One of the biggest challenges for animal researchers is to come up with tests that can distinguish between the two.

I think that intelligence is such a narrow branch of the tree of life - this branch of primates we call humans. No other animal, by our definition, can be considered intelligent. So intelligence can't be all that important for survival, because there are so many animals that don't have what we call intelligence, and they're surviving just fine.

I don't know anybody who said, 'I love that teacher, he or she gave a really good homework set,' or 'Boy, that was the best class I ever took because those exams were awesome.' That's not what people want to talk about. It's not what influences people in one profession or another.

We explore our environment, more than we are compelled to utter poetry, when we're toddlers. We start doing that later. Before that happens, every child is a scientist.

No one wants to die, and no one wants to die poor. These are the two fundamental truths that transcend culture, they transcend politics, they transcend economic cycles.

Passion is what gets you through the hardest times that might otherwise make strong men weak, or make you give up.

Stephen Hawking's been watching too many Hollywood movies. I think the only kind aliens in Hollywood are the ones created by Steven Spielberg - 'Close Encounters of the Third Kind' and 'E.T.,' for example. All other aliens are trying to suck our brains out.

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.

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.

The Universe is under no obligation to make sense to you.

I claim that space is part of our culture. You've heard complaints that nobody knows the names of the astronauts, that nobody gets excited about launches, that nobody cares anymore except people in the industry. I don't believe that for a minute.

Space only becomes ordinary when the frontier is no longer being breached.

If you want a nation to have space exploration ambitions, you've got to send humans.

Philosophically, the universe has really never made things in ones. The Earth is special and everything else is different? No, we've got seven other planets. The sun? No, the sun is one of those dots in the night sky. The Milky Way? No, it's one of a hundred billion galaxies. And the universe - maybe it's countless other universes.

There's a lot to do in space. I want to learn more about the greenhouse effect on Venus, about whether there was life on Mars, about the environment in which Earth and the Sun is immersed, the behavior of the Sun.

The urge to miniaturize electronics did not exist before the space program. I mean our grandparents had radios that was furniture in the living room. Nobody at the time was saying, 'Gee, I want to carry that in my pocket.' Which is a non-thought.

I was transformed by picking up a pair of binoculars and looking up, and that's hard to do for a city kid because when you look up you just see buildings - and really, your first thought is to look in people's windows. So to look out of the space - out of living space - and look up to the sky, binoculars go far, literally and figuratively.

If the United States commits to the goal of reaching Mars, it will almost certainly do so in reaction to the progress of other nations - as was the case with NASA, the Apollo program, and the project that became the International Space Station.

Space enthusiasts are the most susceptible demographic to delusion that I have ever seen.

There are thousands of asteroids whose orbit in the Solar System crosses that of Earth. And we have a little acronym for them - NEOs: near Earth objects. And our biggest goal is to try to catalogue them, so we know in advance if one is going to put us at risk.

Space in general gave us GPS - that's not specifically NASA, but it's investments in space.

As a scientist, I want to go to Mars and back to asteroids and the Moon because I'm a scientist. But I can tell you, I'm not so naive a scientist to think that the nation might not have geopolitical reasons for going into space.

Private enterprise can never lead a space frontier. It's not possible because a space frontier is expensive, it has unknown risks and it has unquantified risks.

Whether or not people go into space or serve the space industry, they will have the sensitivity to those fields necessary to stimulate unending innovation in the technological fields, and it's that innovation in the 21st century that will drive tomorrow's economies.

There are a lot of things you can do in space, and space essentially is unlimited resources. We are climbing over ourselves here looking for the next source of energy. The universe has an unlimited source of energy.