Carl Sagan Quotes, Inability Quotes, Hypothesis Quotes

[One's] inability to invalidate your hypothesis is not at all the same thing as proving it true.

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Tags : Carl Sagan Quotes , Inability Quotes , Hypothesis Quotes

The significance of our lives and our fragile planet is then determined only by our own wisdom and courage. We are the custodians of life's meaning. We long for a Parent to care for us, to forgive us our errors, to save us from our childish mistakes. But knowledge is preferable to ignorance. Better by far to embrace the hard truth than a reassuring fable. If we crave some cosmic purpose, then let us find ourselves a worthy goal.

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Tags : Carl Sagan Quotes , Mistake Quotes , Ignorance Quotes

Many statements about God are confidently made by theologians on grounds that today at least sound specious. Thomas Aquinas claimed to prove that God cannot make another God, or commit suicide, or make a man without a soul, or even make a triangle whose interior angles do not equal 180 degrees. But Bolyai and Lobachevsky were able to accomplish this last feat (on a curved surface) in the nineteenth century, and they were not even approximately gods.

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Writing is perhaps the greatest of human inventions.

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On the day that we do discover that we are not alone, our society may begin to evolve and transform in some incredible and wondrous new ways.

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Tags : Carl Sagan Quotes , May Quotes , Our Society 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

Imagination will often carry us to worlds that never were. But without it we go nowhere.

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Tags : Carl Sagan Quotes , Life Quotes , Art Quotes

The fact is that far more crime and child abuse has been committed by zealots in the name of God, Jesus and Mohammed than has ever been committed in the name of Satan. Many people don’t like that statement, but few can argue with it.

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Tags : Carl Sagan Quotes , Jesus Quotes , Children Quotes

The usual rejoinder to someone who says 'They laughed at Columbus, they laughed at Galileo' is to say 'But they also laughed at Bozo the Clown'.

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Tags : Carl Sagan Quotes , Science Quotes , Usual Quotes

A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guarantee the freedom to publish, to contradict, and to experiment. Arguments from authority are unacceptable.

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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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Tags : Carl Sagan Quotes , Two Quotes , Race Quotes

The way to find out about our place in the universe is by examining the universe and by examining ourselves - without preconceptions, with as unbiased a mind as we can muster.

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Tags : Carl Sagan Quotes , Mind Quotes , Unbiased Quotes

Ours is the first generation that has grown up with science-fiction ideas.

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Tags : Carl Sagan Quotes , Ideas Quotes , Generations Quotes

But down deep, at the molecular heart of life we're essentially identical to trees.

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Life is but a momentary glimpse of the wonder of this astonishing universe, and it is sad to see so many dreaming it away on spiritual fantasy.

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Tags : Carl Sagan Quotes , Dream Quotes , Spiritual Quotes

Discussing the possibilities of extraterrestrial life: I would love it even if they were short, sullen, grumpy and sexually obsessed. But there just isn't any good evidence.

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Tags : Carl Sagan Quotes , Life Quotes , Sullen Quotes

All over the world there are enormous numbers of smart, even gifted, people who harbor a passion for science. But that passion is unrequited. Surveys suggest that some 95% of Americans are "scientifically illiterate." That's...the same fraction...of slaves who were illiterate before the Civil War.

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Tags : Carl Sagan Quotes , War Quotes , Smart Quotes

I think the discomfort that some people feel in going to the monkey cages at the zoo is a warning sign.

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I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence.

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Tags : Carl Sagan Quotes , Believe Quotes , Science 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