We make our world significant by the courage of our questions and the depth of our answers.
CARL SAGANAll over the world there are enormous numbers of smart, even gifted, people who harbor a passion for science.
More Carl Sagan Quotes
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You have to know the past to understand the present.
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The significance of our lives and our fragile planet is then determined only by our own wisdom and courage.
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The universe seems neither benign nor hostile, merely indifferent.
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If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.
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There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
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Every star may be a sun to someone.
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The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth.
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The notion that science and spirituality are somehow mutually exclusive does a disservice to both.
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The Earth is the only world known so far to harbor life.
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We can’t help it. Life looks for life.
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Across the sea of space, the stars are other suns.
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Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgement, the manner in which information is coordinated and used.
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Somewhere, something incredible is waiting to be known.
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If you wish to make an apple pie from scratch, you must first invent the universe.
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One of the greatest gifts adults can give – to their offspring and to their society – is to read to children.
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Extraordinary claims require extraordinary evidence.
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One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.
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The only thing we’ve found that makes the emptiness bearable, is each other.
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Science is a way to not fool ourselves.
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Books are like seeds. They can lie dormant for centuries and then flower in the most unpromising soil.
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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, you will not find another.
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Other things being equal, it is better to be smart than to be stupid.
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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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Be grateful everyday for the brief but magnificent opportunity that life provides.
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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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.
CARL SAGAN