Carl Sagan Sayings and Quotes

Below you will find our collection of inspirational, wise, and humorous old carl sagan quotes, carl sagan sayings, and carl sagan proverbs, collected over the years from a variety of sources.


The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.     

Carl Sagan

Extraordinary claims require extraordinary evidence.     

Carl Sagan

Skepticism enables us to distinguish fancy from fact, to test our speculations.     

Carl Sagan

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

Our ancestors worshipped the Sun, and they were not that foolish. It makes sense to revere the Sun and the stars, for we are their children.      

Carl Sagan

If it can be destroyed by the truth, it deserves to be destroyed by the truth.     

Carl Sagan

Extraordinary claims require extraordinary evidence.     

Carl Sagan

People are not stupid. They believe things for reasons. The last way for skeptics to get the attention of bright, curious, intelligent people is to belittle or condescend or to show arrogance toward their beliefs.     

Carl Sagan

It's hard to kill a creature once it lets you see its consciousness.     

Carl Sagan

It is the tension between creativity and skepticism that has produced the stunning and unexpected findings of science.     

Carl Sagan

UFOs: The reliable cases are uninteresting and in the interesting cases are unreliable.     

Carl Sagan

You could just as well say that an agnostic is a deeply religious person with at least a rudimentary knowledge of human fallibility.     

Carl Sagan

It is of interest to note that while some dolphins are reported to have learned English — up to 50 words used in correct context — no human being has been reported to have learned dolphinese.     

Carl Sagan

If you wish to make an apple pie from scratch, you must first invent the universe.     

Carl Sagan

The passion to explore is at the heart of being human.     

Carl Sagan

Extraordinary observations require extraordinary evidence to make them believable.     

Carl Sagan

The universe seems neither benign nor hostile, merely indifferent to the concerns of such puny creatures as we are.     

Carl Sagan

The universe is a pretty big place. If it's just us, seems like an awful waste of space.     

Carl Sagan

If chimpanzees have consciousness, if they are capable of abstractions, do they not have what until now has been described as 'human rights'? How smart does a chimp have to be before killing him constitutes murder?     

Carl Sagan

Perhaps our fears about extraterrestrial contact are merely a projection of our own backwardness, an expression of our guilty conscience about our past history: the ravages that have been visited on civilizations only slightly more backward than we.     

Carl Sagan

Even through your hardest days, remember we are all made of stardust.     

Carl Sagan

Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.     

Carl Sagan

The beach reminds us of space. Fine sand grains, all more or less uniform in size, have been produced from the larger rocks through ages of jostling and rubbing, abrasion and erosion, again driven through waves and weather by distinct moon and Sun.      

Carl Sagan

Somewhere, something incredible is waiting to be known.     

Carl Sagan

An atheist has to know more than I know. An atheist is someone who knows there is no God.     

Carl Sagan

An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God. I know of no such compelling evidence.     

Carl Sagan

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.     

Carl Sagan

But nature is always more subtle, more intricate, more elegant than what we are able to imagine.     

Carl Sagan

There is a lurking fear that some things are not 'meant' to be known, that some inquiries are too dangerous for human beings to make.     

Carl Sagan

A still more glorious dawn awaits / not a sunrise, but a galaxy-rise / a morning filled with 400 billion suns / the rising of the milky way     

Carl Sagan