By exploring other worlds we safeguard this one. By itself, I think this fact more than justifies the money our species has… — Carl Sagan Copy Share Image
Science is a way of thinking much more than it is a body of knowledge. Its goal is to find out how… — Carl Sagan Copy Share Image
We are the product of 4.5 billion years of fortuitous, slow biological evolution. There is no reason to think that the evolutionary… — Carl Sagan Copy Share Image
Much of human history can, I think, be described as a gradual and sometimes painful liberation from provincialism, the emerging awareness that… — Carl Sagan Copy Share Image
The dangers of not thinking clearly are much greater now than ever before. It's not that there's something new in our way… — Carl Sagan Copy Share Image
Science is much more than a body of knowledge. It is a way of thinking. This is central to its success. Science… — Carl Sagan Copy Share Image
These are all cases of proved or presumptive baloney. A deception arises, sometimes innocently but collaboratively, sometimes with cynical premeditation. Usually the… — Carl Sagan Copy Share Image
In college, in the early 1950s, I began to learn a little about how science works, the secrets of its great success,… — Carl Sagan Copy Share Image
It is sometimes said that scientists are unromantic, that their passion to figure out robs the world of beauty and mystery. But is it… — Carl Sagan Copy Share
The prediction of nuclear winter is drawn not, of course, from any direct experience with the consequences of global nuclear war, but rather from… — Carl Sagan Copy Share
The suppression of uncomfortable ideas may be common in religion or in politics, but it is not the path to knowledge; it has no… — Carl Sagan Copy Share
“Telepathy’ literally means to feel at a distance, just as ‘telephone’ is to hear at a distance and ‘television’ is to see at a… — Carl Sagan Copy Share
“On the scale of worlds—to say nothing of stars or galaxies—humans are inconsequential, a thin film of life on an obscure and solitary lump… — Carl Sagan Copy Share
Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies,… — Carl Sagan Copy Share
In our time, we have sifted the sands of Mars, we have established a presence there, we have fulfilled a century of dreams! — Carl Sagan Copy Share
“[ When a religious couple wrote to Sagan about fulfilled prophecies, he wrote back in May 1996 :] If ‘fulfilled prophecy’ is your criterion,… — Carl Sagan Copy Share
“Books permit us to voyage through time, to tap the wisdom of our ancestors. The library connects us with the insight and knowledge, painfully… — Carl Sagan Copy Share
We live on a hunk of rock and metal that circles a humdrum star that is one of 400 billion other stars that make… — Carl Sagan Copy Share
A tiny blue dot set in a sunbeam. Here it is. That's where we live. That's home. We humans are one species and this… — Carl Sagan Copy Share
Any sufficiently crisp question can be answered by a single binary digit-0 or 1, yes or no. — Carl Sagan Copy Share
Humans — who enslave, castrate, experiment on, and fillet other animals — have had an understandable penchant for pretending animals do not feel pain.… — Carl Sagan Copy Share
