Carl Sagan Quotes, Stars Quotes, Distance Quotes

The immense distances to the stars and the galaxies mean that we see everything ins pace int he past, some as they were before the Earth came to be. Telescopes are time machines.

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Tags : Carl Sagan Quotes , Stars Quotes , Distance Quotes

The near side of a galaxy is tens of thousands of light-years closer to us than the far side; thus we see the front as it was tens of thousands of years before the back. But typical events in galactic dynamics occupy tens of millions of years, so the error in thinking of an image of a galaxy as frozen in one moment of time is small.

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Tags : Carl Sagan Quotes , Thinking Quotes , Errors Quotes

Who are we, if not measured by our impact on others?

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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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The open road still softly calls.

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When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never forget it.

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Tags : Carl Sagan Quotes , Inspirational Quotes , Educational 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

Every thinking person fears nuclear war, and every technological state plans for it. Everyone knows it is madness, and every nation has an excuse

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We go about our daily lives understanding almost nothing of the world.

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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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Tags : Carl Sagan Quotes , Writing Quotes , Mathematical Equations 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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The nuclear arms race is like two sworn enemies standing waist deep in gasoline, one with three matches, the other with five.

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Even through your hardest days, remember we are all made of stardust.

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In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken..."

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Tags : Carl Sagan Quotes , Change Quotes , Science Quotes

Extraordinary claim requires extraordinary proof.

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The simplest thought, like the concept of the number one, has an elaborate logical underpinning.

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Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgement, the manner in which information is coordinated and used.

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To read is to voyage through time.

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If we say that God has always been, why not save a step and conclude that the universe has always been?

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Tags : Carl Sagan Quotes , Inspirational Quotes , Motivational Quotes

Goddard represented a unique combination of visionary dedication and technological brilliance. He studied physics because he needed physics to get to Mars. In reading the notebooks of Robert Goddard, I am struck by how powerful his exploratory and scientific motivations were - and how influental speculative ideas, even erroneous ones, can be on the shaping of the future.

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Tags : Carl Sagan Quotes , Notebook Quotes , Motivation Quotes