A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guarantee the freedom to publish, to contradict, and to experiment. Arguments from authority are unacceptable.
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Chapter 14, "The Common Enemy".Carl Sagan
There must be no barriers to freedom of inquiry ... There is no place for dogma in science. The scientist is free, and must be free to ask any question, to doubt any assertion, to seek for any evidence, to correct any errors. Our political life is also predicated on openness. We know that the only way to avoid error is to detect it and that the only way to detect it is to be free to inquire. And we know that as long as men are free to ask what they must, free to say what they think, free to think what they will, freedom can never be lost, and science can never regress.
J. Robert Oppenheimer
All propaganda or popularization involves a putting of the complex into the simple, but such a move is instantly deconstructive. For if the complex can be put into the simple, then it cannot be as complex as it seemed in the first place; and if the simple can be an adequate medium of such complexity, then it cannot after all be as simple as all that.
Terry Eagleton
There is no other species on the Earth that does science. It is, so far, entirely a human invention, evolved by natural selection in the cerebral cortex for one simple reason: it works. It is not perfect. It can be misused. It is only a tool. But it is by far the best tool we have, self-correcting, ongoing, applicable to everything. It has two rules. First: there are no sacred truths; all assumptions must be critically examined; arguments from authority are worthless. Second: whatever is inconsistent with the facts must be discarded or revised. We must understand the Cosmos as it is and not confuse how it is with how we wish it to be.
Carl Sagan
We look upon authority too often and focus over and over again, for thirty or forty or fifty years, as if there is something wrong with authority. We see only the oppressive side of authority. Maybe it comes out of our history and our background. What we don't see is that freedom is not a concept in which people can do anything they want, be anything they can be. Freedom is about authority. Freedom is about the willingness of every single human being to cede to lawful authority a great deal of discretion about what you do.
Rudy Giuliani
It is quite useless to declare that all men are born free if you deny that they are born good. Guarantee a man's goodness and his liberty will take care of itself. To guarantee his freedom on condition that you approve of his moral character is formally to abolish all freedom whatsoever, as every man's liberty is at the mercy of a moral indictment which any fool can trump up against everyone who violates custom, whether as a prophet or as a rascal.
George Bernard Shaw
Sagan, Carl
Sagan, Francoise
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