The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.
CARL SAGANBe grateful everyday for the brief but magnificent opportunity that life provides.
More Carl Sagan Quotes
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I’ve always thought an agnostic is an atheist without the courage of his convictions.
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Writing is the greatest of human inventions, binding together people, citizens of distant epochs, who never knew one another.
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The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.
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A galaxy is composed of gas and dust and stars – billions upon billions of stars. Every star may be a sun to someone.
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All civilizations become either spacefaring or extinct.
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We are a way for the cosmos to know itself.
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The very act of understanding is a celebration of joining, merging, even if on a very modest scale, with the magnificence of the Cosmos.
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Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.
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There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
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We live on a mote of dust suspended in a sunbeam.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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The universe seems neither benign nor hostile, merely indifferent.
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Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.
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The cure for a fallacious argument is a better argument, not the suppression of ideas.
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The visions we offer our children shape the future.
CARL SAGAN