The absence of evidence is not evidence of absence.
CARL SAGANBooks permit us to voyage through time, to tap the wisdom of our ancestors.
More Carl Sagan Quotes
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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.
CARL SAGAN -
Other things being equal, it is better to be smart than to be stupid.
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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 SAGAN -
Those at too great a distance may, I am well are, mistake ignorance for perspective.
CARL SAGAN -
To live in the hearts we leave behind is to live forever.
CARL SAGAN -
Nature is unsentimental. Death is built in.
CARL SAGAN -
I would suggest that science is, at least in my part, informed worship.
CARL SAGAN -
Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.
CARL SAGAN -
There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
CARL SAGAN -
Books permit us to voyage through time, to tap the wisdom of our ancestors.
CARL SAGAN -
The universe is not required to be in perfect harmony with human ambition.
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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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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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Extinction is the rule. Survival is the exception.
CARL SAGAN







