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"Life on Earth is at the ever-increasing risk of being wiped out by a disaster, such as sudden global nuclear war, a genetically engineered virus or other dangers we have not yet thought of."
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Exlpore more Environment quotes

"Chicago happened slowly, like a migraine. First they were driving through countryside, then, imperceptibly, the occasional town became a low suburban sprawl, and the sprawl became the city."

"Summer was full on and the nights hot. It was like lying in warm syrup there in the dark under the viaduct, in the steady whine of gnats and nightbugs."

"The addition of certain chemicals to the atmosphere will destroy wavelengths of light and it may only be a matter of time before one of these wavelengths of light that is critical for human survival is eliminated. This is called: The Extinction Wavelength."

"We are such small, stupid things. For most of my life I thought of nature as the stupid thing: Blind, animal, destructive. We, the humans, were clean and smart and in control: we had wrestled the rest of the world into submission, battered it down, pinned it to a glass slide and the pages of The Bool of Shhh."

"By eating meat we share the responsibility of climate change, the destruction of our forests, and the poisoning of our air and water. The simple act of becoming a vegetarian will make a difference in the health of our planet."

"Whenever they are given the choice, some people choose a bath over a shower; they, too, would like to do their bit to waste water."

"The straw-coated floor crunched beneath her boots, a cool breeze sweeping in from where the roof had been ripped half off thanks to Sorrel's bull. To keep the wyverns from feeling less caged-and so Abraxos could watch the stars, as he liked to do."

"In a natural environment, nature controls the breeding cycles. In the man-made environment, abnormal environmental conditions control the unnatural breeding cycles."

"It's not as though we can keep burning coal in our power plants. Coal is a finite resource, too. We must find alternatives, and it's a better idea to find alternatives sooner then wait until we run out of coal, and in the meantime, put God knows how many trillions of tons of CO2 that used to be buried underground into the atmosphere."

"Tree planting is always a utopian enterprise, it seems to me, a wager on a future the planter doesn't necessarily expect to witness."
Explore more quotes by Stephen Hawking

"Yet if there really were a complete unified theory, it would also presumably determine our actions-so the theory itself would determine the outcome of our search for it! And why should it determine that we come to the right conclusions from the evidence? Might it not equally well determine that we draw the wrong conclusion? Or no conclusion at all?"

"I regard the brain as a computer which will stop working when its components fail. There is no heaven or afterlife for broken down computers that is a fairy story for people afraid of the dark."

"A few years ago, the city council of Monza, Italy, barred pet owners from keeping goldfish in curved bowls... saying that it is cruel to keep a fish in a bowl with curved sides because, gazing out, the fish would have a distorted view of reality. But how do we know we have the true, undistorted picture of reality?"

"Ever since the dawn of civilization, people have not been content to see events as unconnected and inexplicable. They have craved an understanding of the underlying order in the world. Today we still yearn to know why we are here and where we came from. Humanity's deepest desire for knowledge is justification enough for our continuing quest. And our goal is nothing less than a complete description of the universe we live in."

"Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp space-time so much that you could go off in a rocket and return before you set out."

"My expectations were reduced to zero when I was 21. Everything since then has been a bonus. - December 12, 2004"

"I don't have much positive to say about motor neuron disease, but it taught me not to pity myself because others were worse off, and to get on with what I still could do. I'm happier now than before I developed the condition."

"There is a fundamental difference between religion, which is based on authority, and science, which is based on observation and reason. Science will win because it works."
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