Carl Sagan Quotes, Motivation Quotes, Self Quotes

Perhaps, in retrospect, there would be little motivation even for malevolent extraterrestrials to attack the Earth; perhaps, after a preliminary survey, they might decide it is more expedient just to be patient for a little while and wait for us to self-destruct.

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Tags : Carl Sagan Quotes , Motivation Quotes , Self Quotes

Arguments from authority carry little weight – authorities have made mistakes in the past. They will do so again in the future. Perhaps a better way to say it is that in science there are no authorities; at most, there are experts.

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Tags : Carl Sagan Quotes , Mistake Quotes , Past Quotes

With insufficient data it is easy to go wrong.

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I find science so much more fascinating than science fiction. It also has the advantage of being true.

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In our time, we have sifted the sands of Mars, we have established a presence there, we have fulfilled a century of dreams!

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When permitted to listen to alternative opinions and engage in substantive debate, people have been known to change their minds. It can happen.

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Tags : Carl Sagan Quotes , People Quotes , Mind Quotes

We are star stuff which has taken its destiny into its own hands. The loom of time and space works the most astonishing transformations of matter.

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We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.

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Tags : Carl Sagan Quotes , Inspirational Quotes , Motivational Quotes

I don?t feel rejected by the sky. I?m a part of it- tiny, to be sure, but everything is tiny compared to that overwhelming immensity.

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Tags : Carl Sagan Quotes , Sky Quotes , Rejection Quotes

It seems madness to say, 'We're worried that they're going to become addicted to marijuana' -- there's no evidence whatever that it's an addictive drug, but even if it were, these people are dying, what are we saving them from?

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Tags : Carl Sagan Quotes , Marijuana Quotes , People Quotes

It is clear that the nations of the world now can only rise and fall together. It is not a question of one nation winning at the expense of another. We must all help one another or all perish together.

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Tags : Carl Sagan Quotes , Peace Quotes , Fall Quotes

An extraterrestrial being, newly arrived on Earth - scrutinizing what we mainly present to our children in television, radio, movies, newspapers, magazines, the comics, and many books - might easily conclude that we are intent on teaching them murder, rape, cruelty, superstition, credulity, and consumerism. We keep at it, and through constant repetition many of them finally get it.

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Tags : Carl Sagan Quotes , Children Quotes , Book Quotes

[S]cience has itself become a kind of religion.

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We've arranged a civilization in which most crucial elements profoundly depend on science and technology.

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Tags : Carl Sagan Quotes , Technology Quotes , Civilization Quotes

He sought a way to preserve the past. John Hershel was one of the founders of a new form of time travel.... a means to capture light and memories. He actually coined a word for it... photography. When you think about it, photography is a form of time travel. This man is staring at us from across the centuries, a ghost preserved by light.

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Tags : Carl Sagan Quotes , Photography Quotes , Memories Quotes

It's sometimes easier to reject strong evidence than to admit that we've been wrong, this is information about ourselves worth having.

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Across the sea of space, the stars are other suns.

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Writing a novel is like trying to solve a very long mathematical equation. Changing anything can change everything else.

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Understanding is a kind of ecstasy

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Tags : Carl Sagan Quotes , Understanding Quotes , Curiosity Quotes

We on Earth have just awakened to the great oceans of space and time from which we have emerged. We are the legacy of 15 billion years of cosmic evolution. We have a choice: We can enhance life and come to know the universe that made us, or we can squander our 15 billion-year heritage in meaningless self-destruction. What happens in the first second of the next cosmic year depends on what we do, here and now, with our intelligence and our knowledge of the cosmos.

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Tags : Carl Sagan Quotes , Ocean Quotes , Self Quotes