Carl Sagan Quotes, Keys Quotes

Cleverly designed experiments are the key.

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Any faith that admires truth, that strives to know God, must be brave enough to accommodate the universe.

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Extraordinary observations require extraordinary evidence to make them believable.

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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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Human beings have a demonstrated talent for self-deception when their emotions are stirred.

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In many cultures it is customary to answer that God created the universe out of nothing. But this is mere temporizing. If we wish courageously to pursue the question, we must, of course ask next where God comes from? And if we decide this to be unanswerable, why not save a step and conclude that the universe has always existed?

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Tags : Carl Sagan Quotes , Atheist Quotes , Religion Quotes

There is a report that says that kids who watch violent TV programs tend to be more violent when they grow up. But did the TV cause the violence, or do violent children preferentially enjoy watching violent programs?

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All colours are arbitrary.

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Not explaining science seems to me perverse. When you're in love, you want to tell the world.

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Because men, compared to male chimps, have such relatively small testicles (large testicles indicate a species where many males mate, one after the other, with the same female), we might guess that promiscuous societies were uncommon in the immediate human past.

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The dumbing down of America is evident in the slow decay of substantive content, a kind of celebration of ignorance.

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There are wonders enough out there without our inventing any.

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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

When Kepler found his long-cherished belief did not agree with the most precise observation, he accepted the uncomfortable fact. He preferred the hard truth to his dearest illusions, that is the heart of science.

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It would be wryly interesting if in human history the cultivation of marijuana led generally to the invention of agriculture, and thereby to civilization.

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A new consciousness is developing which sees the earth as a single organism and recognizes that an organism at war with itself is doomed. We are one planet.

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All civilizations become either spacefaring or extinct.

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After the earth dies, some 5 billion years from now, after it's burned to a crisp, or even swallowed by the Sun, there will be other worlds and stars and galaxies coming into being - and they will know nothing of a place once called Earth.

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Who are we, if not measured by our impact on others? That’s who we are! We’re not who we say we are, we’re not who we want to be - we are the sum of the influence and impact that we have, in our lives, on others.

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The old appeals to racial, sexual and religious chauvinism to rabid nationalist fervor, are beginning not to work.

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Tags : Carl Sagan Quotes , Religious Quotes , Zeitgeist Quotes