Neil deGrasse Tyson Quotes

Clearly, unless thinking beings inevitably wipe themselves out soon after developing technology, extraterrestrial intelligence could often be millions or billions of years in advance of us. We're the galaxy's noodling newbies.

The discovery and investigation of life on other planets is likely to change many of our ideas about how life arose on the Earth and even what is life and its natural development.

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.

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.

We think that life develops spontaneously on Earth, so it must be possible for life to develop on suitable planets elsewhere in the universe. But we don't know the probability that a planet develops life.

There was a long history of people believing there was life on Venus. It was about the same size as Earth. It had clouds. It was commonly believed it was tropical - wet, hot and steamy.

Most certainly, some planets are not inhabited, but others are, and among these there must exist life under all conditions and phases of development.

I suspect there could be life and intelligence out there in forms that we can't conceive. And there could, of course, be forms of intelligence beyond human capacity-beyond as much as we are beyond a chimpanzee.

By the way, were we to find life-forms on Venus, we would probably call them Venutians, just as people from Mars would be Martians. But according to rules of Latin genitives, to be “of Venus” ought to make you a Venereal. Unfortunately, medical doctors reached that word before astronomers did. Can’t blame them, I suppose. Venereal disease long predates astronomy, which itself stands as only the second oldest profession.

It's worth remembering that all technology leaves a footprint. For example, our own technology is leaving a footprint in terms of global warming, which could be detected from a long way away. One assumes that a very advanced civilization that has been around maybe millions and millions of years would have an even bigger footprint that might extend beyond its planet to its immediate astronomical environment.

Statistically it's a certainty there are hugely advanced civilizations, intelligences, life forms out there. I believe they're so advanced they're even doing interstellar travel. I believe it's possible they even came here.

I certainly believe in aliens in space, and that they are indeed visiting our planet. They may not look like us, but I have very strong feelings that they have advanced beyond our mental capabilities.

I have been monitoring your earthly broadcasts for many years.

In regards to Oral Roberts' claim that God told him that he would die unless he received $20 million by March, God's lawyers have stated that their client has not spoken with Roberts for several years. Off the record, God has stated that 'if I had wanted to ice the little toad, I would have done it a long time ago.

One particular aspect of Siddhartha’s revelation of the outside world has always struck me. Quite possibly he lived his first thirty years without any knowledge of number. How must he have felt, then, to see crowds of people mingling in the streets? Before that day he would not have believed that so many people existed in all the world. And what wonder it must have been to discover flocks of birds, and piles of stones, leaves on trees and blades of grass! To suddenly realise that, his whole life long, he had been kept at arm’s length from multiplicity.

Childhood isn't just those years. It's also the opinions you form about them afterward. That's why our childhoods are so long.

In case you're an alien and you're reading this: BITE ME.

I'd bet almost anything that life from another planet, if formed independently from life on Earth, would be more different from all species of Earth life than any two species of Earth life are from each other.

Earth has provided a stable platform for the evolution of life over 4 billion years. But that lease is limited; we know for sure that it will expire after a few billion more. . . . If we are wise, we will have furnished our new apartments long before that time.

I've been doing stand-up for so long, I think 19 years, that I love topics I can also expand on. Once I identify a topic like, say, seafood, which is a big one right now, it's like there are different kinds of tangents I can go on to build a larger chunk.

Playing 13 years is a long time, but I feel really good. It's not like I'm [old]. I'm just thankful.

All the people that still believed in me, after seven years - it's a long time.

I said, 'If other beings besides us exist on Earth, why didn't we meet them a long time ago?

I cannot tell you how long it takes for your exercise to work. If you haven't seen any results in a year or six months you're doing something wrong.

Los Angeles has interested me for a long time. I was in Texas for five years, for the same reason. I wanted to photograph there.