Carl Sagan Quotes

Browse 4 of the most memorable quotes by Carl Sagan, spanning themes of inspiration and wisdom. Each quote has its own page with related quotes and a free tool to turn it into a shareable image.

I don't want to believe. I want to know.
Carl Sagan
Carl Sagan
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In the face of uncertainty, there is nothing wrong with hope.
Carl Sagan
Carl Sagan
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The universe is so immense that it appears immutable, and that the duration of a planet such as that of the earth is only a chapter, less than that, a phrase, less still, only a word of the universe's history.
Carl Sagan
Carl Sagan
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fishing provides time to think, and reason not to. If you have the virtue of patience, an hour or two of casting alone is plenty of time to review all you've learned about the grand themes of life.
Carl Sagan
Carl Sagan
Also featured in: life time

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