In exchange for freedom of inquiry, scientists are obliged to explain their work. — Carl Sagan Copy Share Image
“There are many kinds of slavery and many kinds of freedom. But reading is still the path.” — Carl Sagan Copy Share Image
“Literacy is the path from slavery to freedom. But there are many kinds of slavery and many kinds of freedom. But reading… — Carl Sagan Copy Share Image
Frederick Douglas taught that literacy is the path from slavery to freedom. There are many kinds of slavery and many kinds of… — 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
“I promise to question everything my leaders tell me. I promise to use my critical faculties. I promise to develop my independence… — 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
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
“The Somnium makes clear to us, although it did not to all of Kepler’s contemporaries, that “in a dream one must be… — Carl Sagan Copy Share Image
What distinguishes our species is thought. The cerebral cortex is in a way a liberation. We need no longer be trapped in… — Carl Sagan Copy Share Image
'In his celebrated book, 'On Liberty', the English philosopher John Stuart Mill argued that silencing an opinion is "a peculiar evil." If… — Carl Sagan Copy Share Image
“The best way to avoid abuses is for the populace in general to be scientifically literate, to understand the implications of such… — 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 Image
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 Image
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 Image
“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 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 solitary lump… — Carl Sagan Copy Share Image
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 Image
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 Image
“[ 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 Image
“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 Image
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 Image
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 Image
![“[ When a religious couple wrote to Sagan about fulfilled prophecies, he wrote back in May 1996 :] If ‘fulfilled prophecy’ is your criterion, why do you not believe in materialistic science, which has an unparalleled record of fulfilled prophecy? Consider, for example, eclipses.” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/875/carl-sagan-160_belief_when-a-religious-couple-wrote-to-sagan-a_25095.jpg)
