Neil deGrasse Tyson Quotes

Perhaps, as some wit remarked, the best proof that there is Intelligent Life in Outer Space is the fact it hasn't come here. Well, it can't hide forever - one day we will overhear it.

I believe alien life is quite common in the universe, although intelligent life is less so. Some say it has yet to appear on planet Earth.

People quite often think of the question 'Are we alone in the universe?' in terms of other civilizations out there: life forms that have reached at least our level of technological development.

The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.

I'm sure the universe is full of intelligent life. It's just been too intelligent to come here.

I believe that there may be intelligent life on other planets.

With 'Extinction Machine,' I wanted to start some conversations about whether we're alone in the universe and what that might mean.

If we find life out there, and it's not us, we will deem it not intelligent. But what may be equally as likely is that we find life that's vastly more intelligent than we are. If that's the case, we are putty in their hands.

I think there's all kinds of life out there, including intelligent life, but the reason we haven't found each other is because of vast distances.

I think that it would be unwise of us not to believe that there is life outside of us, intelligent life. And so I do believe in aliens.

To me, it's the kind of interesting question the human race should be investing in. Is there intelligent life out there? Are there other beings out there?

I believe there's other forms of intelligence in the universe. I've seen and heard some pretty convincing UFO stuff. Besides, if we're the most intelligent things in the universe... well, that's just depressing.

The best proof that there's intelligent life in the universe is that it hasn't come here.

For many centuries, humans have speculated that there might be planetary systems around other stars and that there could be extraterrestrial life there and even intelligent being. However, those were simply speculations, and now we have evidence for the first part of these ideas.

I am sorry to say that there is too much point to the wisecrack that life is extinct on other planets because their scientists were more advanced than ours.

Spectroscopy can probably answer the question, 'Is there anybody out there?' Are we alone?

I believe in aliens. I think it would be way too selfish of us as mankind to believe we are the only lifeforms in the universe.

I haven't a clue if there is life on other planets but I'd be charmed if we found a unicellular organism on Mars. It would change our whole concept of life on Earth.

Will searching for distant messages work? Is there intelligent life out there? The SETI effort is worth continuing, but our common-sense beacons approach seems more likely to answer those questions.

I think space exploration is very important. I think there is very intelligent life on Mars. I believe that Martians are spying on us from the bottom of the ocean.

Ethan Allen was convinced that every planet out there has its own intelligent extraterrestrials. And this, as you can imagine, is a radical, inspiring, but very unsettling, idea.

The human race may be the only intelligent beings in the galaxy.

The universe is large and old, and the ingredients for life as we know it are everywhere, so there's no reason to think that Earth would be unique in that regard. Whether of not the life became intelligent is a different question, and we'll see if we find that.

To my mathematical brain, the numbers alone make thinking about aliens perfectly rational. The real challenge is to work out what aliens might actually be like.

How can the human race be, like, the only living form in the universe? There have to be other life forms out there. I believe it.