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"Informed ignorance provides the natural state of mind for research scientists at the ever-shifting frontiers of knowledge. People who believe themselves ignorant of nothing have neither looked for, nor stumbled upon, the boundary between what is known and unknown in the cosmos."
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"If you try and take a cat apart to see how it works, the first thing you have on your hands is a non-working cat."

"The disruption of science is one which abandons the method and seeks to conquer grounds outside its territory. It is not at all religion but this pseudo-science that is the enemy of science."

"Mathematics possesses not only truth but supreme beauty - a beauty cold and austere like that of a sculpture."

"Since every piece of matter in the Universe is in some way affected by every other piece of matter in the Universe, it is in theory possible to extrapolate the whole of creation - every sun, every planet, their orbits, their composition and their economic and social history from, say, one small piece of fairy cake."

"Neuroanatomy, political history, and introspection all offer evidence that human beings are quite capable of resisting the urge to surrender to every impulse of reptilian core of brain."
Explore more quotes by Neil deGrasse Tyson

"While I'm a big fan of science fiction, especially as rendered in expensive Hollywood blockbusters, it's the real universe that calls to me."

"The more I learn about the universe, the less convinced I am that there's any sort of benevolent force that has anything to do with it, at all."

"When scientifically investigating the natural world, the only thing worse than a blind believer is a seeing denier."

"I don't know anybody who said, 'I love that teacher, he or she gave a really good homework set,' or 'Boy, that was the best class I ever took because those exams were awesome.' That's not what people want to talk about. It's not what influences people in one profession or another."

"While the Copernican principle comes with no guarantees that it will forever guide us to cosmic truths, it's worked quite well so far: not only is Earth not in the center of the solar system, but the solar system is not in the center of the Milky Way galaxy, the Milky Way galaxy is not in the center of the universe, and it may come to pass that our universe is just one of many that comprise a multiverse. And in case you're one of those people who thinks that the edge may be a special place, we are not at the edge of anything either."

"Passion is what gets you through the hardest times that might otherwise make strong men weak, or make you give up."

"Some molecules - ammonia, carbon dioxide, water - show up everywhere in the universe, whether life is present or not. But others pop up especially in the presence of life itself. Among the biomarkers in Earth's atmosphere are ozone-destroying chlorofluorocarbons from aerosol sprays, vapor from mineral solvents, escaped coolants from refrigerators and air conditioners, and smog from the burning of fossil fuels. No other way to read that list: sure signs of the absence of intelligence."

"Curious that we spend more time congratulating people who have succeeded than encouraging people who have not."

"There's a lot to do in space. I want to learn more about the greenhouse effect on Venus, about whether there was life on Mars, about the environment in which Earth and the Sun is immersed, the behavior of the Sun."
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