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"In college, in the early 1950s, I began to learn a little about how science works, the secrets of its great success, how rigorous the standards of evidence must be if we are really to know something is true, how many false starts and dead ends have plagued human thinking, how our biases can colour our interpretation of evidence, and how often belief systems widely held and supported by the political, religious and academic hierarchies turn out to be not just slightly in error, but grotesquely wrong."
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"I've always been a fan of science fiction films, and I've never been able to put my particular spin on it."


"But the need for conflict to expose prejudice and unclear reasoning, which is deeply embedded in my philosophy of science, has its origin in these debates."


"Software Engineering might be science; but that's not what I do. I'm a hacker, not an engineer."


"Science is defined in various ways, but today it is generally restricted to something which is experimental, which is repeatable, which can be predicted, and which is falsifiable."


"The Church does not pretend to be scientists. It teaches based upon what science tells it."


"Well, they are critics of the Bush administration generally on the human rights record of the administration, and in particular, they are very, very critical of this use of science."


"Any idea of separation is bondage. True liberation of the mind is in non-differentiation. And in the pursuit of breaking free from all the shackles of such man-made bondages, science is the most effective tool we have till this date. But in order to bring out all its effectiveness into the human society, it must be sweetened first with the touch of philosophy. Science without Philosophy leads to chaos. Philosophy without Science leads to nowhere. Only together they can construct a better world."
Explore more quotes by Carl Sagan


"In addition to Ameslan, chimpanzees and other nonhuman primates are being taught a variety of other gestural languages. And it is just this transition from tongue to hand that has permitted humans to regain the ability-lost, according to Josephus, since Eden-to communicate with the animals."


"For ages men had used sticks to club and spear each other-Anaximander of Miletus used the stick to measure time."


"We've arranged a civilization in which most crucial elements profoundly depend on science and technology."


"In its encounter with Nature, science invariably elicits a sense of reverence and awe. The very act of understanding is a celebration of joining, merging, even if on a very modest scale, with the magnificence of the Cosmos. And the cumulative worldwide build-up of knowledge over time converts science into something only a little short of a trans-national, trans-generational meta-mind."


"Writing is perhaps the greatest of human inventions, binding together people who never knew each other, citizens of distant epochs. Books break the shackles of time. A book is proof that humans are capable of magic."


"This looks very much as if the integration of the day's experience into our memory, the forging of new neural links, is either an easier or a more urgent task. As the night wears on and this function is completed, the more affecting dreams, the more bizarrematerial, the fears and lusts and other powerful emotions of thedream material emerge."


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


"It is certainly true that all beliefs and all myths are worthy of a respectful hearing. It is not true that all folk beliefs are equally valid - if we're talking not about an internal mindset, but about understanding of the external reality."


"All of the books in the world contain no more information than is broadcast as video in a single large American city in a single year. Not all bits have equal value."
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