I have experimental evidence that time travel is not possible.
STEPHEN HAWKINGTo confine our attention to terrestrial matters would be to limit the human spirit.
More Stephen Hawking Quotes
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If time travel is possible, where are the tourists from the future?
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It is not clear that intelligence has any long-term survival value.
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Do you ever wonder how much deeper the ocean would be without sponges?
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We only have to look at ourselves to see how intelligent life might develop into something we wouldn’t want to meet.
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The increase of disorder or entropy is what distinguishes the past from the future, giving a direction to time.
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Time travel may be possible, but it is not practical.
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I have sold more books on physics than Madonna has on sex.
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Every man should marry. After all, happiness is not the only thing in life.
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The idea that we are alone in the universe seems to me completely implausible and arrogant, considering the number of planets and stars that we know exist, it’s extremely unlikely that we are the only form of evolved life.
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I would rather be right than rigorous.
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I think the human race doesn’t have a future if we don’t go into space. We need to expand our horizons beyond planet Earth if we are to have a long-term future.
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We live in the most probable of all possible worlds.
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I’m really easy to get along with once you see it my way.
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I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.
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It matters if you just don’t give up.
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I’m not afraid of death, but I’m in no hurry to die.
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While there’s life, there is hope.
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Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor.
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One can’t prove that God doesn’t exist. But science makes God unnecessary. The laws of physics can explain the universe without the need for a creator.
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The laws of science do not distinguish between the past and the future.
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I believe things cannot make themselves impossible.
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Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.
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There should be a better way to start a day than waking up every morning.
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One cannot really argue with a mathematical theorem.
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What was God doing before the divine creation? Was he preparing hell for people who asked such questions?
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I’d say I don’t believe in God, but I’m afraid He might hear me.
STEPHEN HAWKING