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Quote by Carl Sagan

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““If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.””

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The suppression of uncomfortable ideas may be common in religion or in politics, but it is not the path to knowledge; it has no…

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“Telepathy’ literally means to feel at a distance, just as ‘telephone’ is to hear at a distance and ‘television’ is to see at a…

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“On the scale of worlds—to say nothing of stars or galaxies—humans are inconsequential, a thin film of life on an obscure and solitary lump…

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Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies,…

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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 a religious couple wrote to Sagan about fulfilled prophecies, he wrote back in May 1996 :] If ‘fulfilled prophecy’ is your criterion,…

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Don't judge everyone else by your own limited experience.

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“Books permit us to voyage through time, to tap the wisdom of our ancestors. The library connects us with the insight and knowledge, painfully…

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We live on a hunk of rock and metal that circles a humdrum star that is one of 400 billion other stars that make…

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A tiny blue dot set in a sunbeam. Here it is. That's where we live. That's home. We humans are one species and this…

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