Our ancestors lived out of doors. They were as familiar with the night sky as most of us are with our favorite television programs.
CARL SAGANWe can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.
More Carl Sagan Quotes
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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 brain is like a muscle. When it is in use we feel very good. Understanding is joyous.
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We are a way for the cosmos to know itself.
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Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.
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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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Better the hard truth, I say, than the comforting fantasy.
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The universe is a pretty big place. If it’s just us, seems like an awful waste of space.
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For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
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If you wish to make an apple pie from scratch, you must first invent the universe.
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I would suggest that science is, at least in my part, informed worship.
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An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God.
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We are like butterflies who flutter for a day and think it is forever.
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Arguments from authority carry little weight, authorities have made mistakes in the past. They will do so again in the future. Perhaps a better way to say it is that in science there are no authorities; at most, there are experts.
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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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The Earth is a very small stage in a vast cosmic arena.
CARL SAGAN