A googolplex is precisely as far from infinity as is the number 1... no matter what number you have in mind, infinity… — Carl Sagan Copy Share Image
“Keeping an open mind is a virtue—but, as the space engineer James Oberg once said, not so open that your brains fall… — Carl Sagan Copy Share Image
“Contemplated as one grand whole, astronomy is the most beautiful monument of the human mind; the noblest record of its intelligence.” — Carl Sagan Copy Share Image
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. — Carl Sagan Copy Share Image
Who is more humble? The scientist who looks at the universe with an open mind and accepts whatever the universe has to… — Carl Sagan Copy Share Image
Both the Freudian and the Platonic metaphors emphasize the considerable independence of and tension among the constituent parts of the psyche, a… — Carl Sagan Copy Share Image
A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds… — Carl Sagan Copy Share Image
When permitted to listen to alternative opinions and engage in substantive debate, people have been known to change their minds. It can… — Carl Sagan Copy Share Image
My fundamental premise about the brain is that its workings - what we sometimes call "mind" - are a consequence of its… — Carl Sagan Copy Share Image
Time spent with children is time well spent. Their little minds are not constrained by 'reality' or focused upon goals. Anything and… — Carl Sagan Copy Share Image
Books tap the wisdom of our species -- the greatest minds, the best teachers -- from all over the world and from… — Carl Sagan Copy Share Image
“It's no surprise that appeals to a state of mind called faith can relieve symptoms caused, at least in part, by another,… — Carl Sagan Copy Share Image
“This sort of information gathering is precisely what we call play. And the important function of play is thus revealed: it permits… — Carl Sagan Copy Share Image
We live on a hunk of rock and metal that circles a humdrum star that is one of 400 billion other stars… — Carl Sagan Copy Share Image
“...that kind of skeptical questioning, don't accept what authority tells you -attitude of science- is also nearly identical to the attitude of… — Carl Sagan Copy Share Image
The library connects us with the insight and knowledge, painfully extracted from Nature, of the greatest minds that ever were, with the… — Carl Sagan Copy Share Image
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they… — Carl Sagan Copy Share Image
I am not an atheist. An atheist is someone who has compelling evidence that there is no Judeo-Christian-Islamic God. I am not… — Carl Sagan Copy Share Image
“Books, purchasable at low cost, permit us to interrogate the past with high accuracy; to tap the wisdom of our species; to… — Carl Sagan Copy Share Image
“A faith-healer may or may not start out with fraud in mind. But to his amazement, his patients actually seem to be… — Carl Sagan Copy Share Image
“Books permit us to voyage through time, to tap the wisdom of our ancestors. The library connects us with the insight and… — Carl Sagan Copy Share Image
The Bill of Rights decoupled religion from the state, in part because so many religions were steeped in an absolutist frame of… — Carl Sagan Copy Share Image
“Anything you don't understand, you attribute to God. God for you is where you sweep away all the mysteries of the world,… — Carl Sagan Copy Share Image
“On the scale of worlds—to say nothing of stars or galaxies—humans are inconsequential, a thin film of life on an obscure and… — Carl Sagan Copy Share Image
The fact that so little of the findings of modern science is prefigured in Scripture to my mind casts further doubt on… — 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
