There are too many accidents that can befall life on a single planet. — Stephen Hawking Copy Share Image
Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space. — Stephen Hawking Copy Share Image
There is a very real danger that we will kill everything on this planet now that we have the technological power to… — Stephen Hawking Copy Share Image
Our population and our use of the finite resources of planet Earth are growing exponentially, along with our technical ability to change… — Stephen Hawking Copy Share Image
I don't think the human race will survive the next thousand years, unless we spread into space. There are too many accidents… — Stephen Hawking Copy Share Image
The human race shouldn't have all its eggs in one basket, or on one planet. Let's hope we can avoid dropping the… — Stephen Hawking Copy Share Image
I believe that the long-term future of the human race must be space and that it represents an important life insurance for… — Stephen Hawking Copy Share Image
Though we feel we can choose what we do, our understanding of the molecular basis of biology shows that biological processes are… — Stephen Hawking Copy Share Image
In the last 200 years the population of our planet has grown exponentially, at a rate of 1.9% per year. If it… — Stephen Hawking Copy Share Image
The idea that we are alone in the universe seems to me completely implausible and arrogant, considering the number of planets and… — Stephen Hawking Copy Share Image
We think that life develops spontaneously on Earth, so it must be possible for life to develop on suitable planets elsewhere in… — Stephen Hawking Copy Share Image
If we can avoid disaster for the next two centuries, our species should be safe as we spread into space. If we… — Stephen Hawking Copy Share Image
In his eyes shone the reflection of the most beautiful planet in the Universe---a planet that is not too hot and not… — Stephen Hawking Copy Share Image
We only have to look at ourselves to see how intelligent life might develop into something we wouldnt want to meet. I… — Stephen Hawking Copy Share Image
Our population and our use of the finite resources of planet Earth are growing exponentially, along with our technical ability to change… — Stephen Hawking Copy Share Image
The human race is just a chemical scum on a moderate-sized planet, orbiting around a very average star in the outer suburb… — Stephen Hawking Copy Share Image
The large-scale homogeneity of the universe makes it very difficult to believe that the structure of the universe is determined by anything… — Stephen Hawking Copy Share Image
I think [contacting an alien civilization] would be a disaster. The extraterrestrials would probably be far in advance of us. The history… — Stephen Hawking Copy Share Image
If the rate of expansion one second after the Big Bang had been smaller by even one part in a hundred thousand… — Stephen Hawking Copy Share Image
One can see from space how the human race has changed the Earth. Nearly all of the available land has been cleared… — Stephen Hawking Copy Share Image
Not to leave planet Earth would be like castaways on a desert island not trying to escape...Sending humans to other planets ...… — Stephen Hawking Copy Share Image
I think the human race doesn't have a future if we don't go into space. We need to expand our horizons beyond… — Stephen Hawking Copy Share Image
The doctor who diagnosed me with ALS, or motor neuron disease, told me that it would kill me in two or three years. — Stephen Hawking Copy Share
The human race does not have a very good record of intelligent behavior. — Stephen Hawking Copy Share
“We have finally found something that doesn’t have a cause, because there was no time for a cause to exist in. For me this… — Stephen Hawking Copy Share
[On President Bush's plan to get to Mars in 10 years] Stupid. Robots would do a better job and be much cheaper because you… — Stephen Hawking Copy Share
I believe the simplest explanation is, there is no God. No one created the universe and no one directs our fate. This leads me… — Stephen Hawking Copy Share
The increase of disorder or entropy is what distinguishes the past from the future, giving a direction to time. — Stephen Hawking Copy Share
Most sets of values would give rise to universes that, although they might be very beautiful, would contain no one able to wonder at… — Stephen Hawking Copy Share
There is a fundamental difference between religion, which is based on authority, and science, which is based on observation and reason. Science will win… — Stephen Hawking Copy Share
“In the eighteenth century, philosophers considered the whole of human knowledge, including science, to be their field and discussed questions such as: Did the… — Stephen Hawking Copy Share
A model is a good model if first it interprets a wide range of observations in terms of a simple and elegant model, and… — Stephen Hawking Copy Share
“Empedocles noticed that if you cover the neck before you immerse it, a clepsydra does not fill. He reasoned that something invisible must be… — Stephen Hawking Copy Share
The human race shouldn't have all its eggs in one basket, or on one planet. Let's hope we can avoid dropping the basket until… — Stephen Hawking Copy Share
I hope I have helped to raise the profile of science and to show that physics is not a mystery but can be understood… — Stephen Hawking Copy Share
![“I think [contacting an alien civilization] would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species. I think we should keep our heads low.” quote by Stephen Hawking](https://sms4smile.com/quotes/i/585/stephen-hawking-389_aliens_i-think-contacting-an-alien-civilization_1727877.jpg)
