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" The notion that anyone in the 21st century could take seriously the notion that the sun orbits the Earth, or that the Earth is the center of the universe, is almost unbelievable. "

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" Feynman once said, 'Science is imagination in a straitjacket.' It is ironic that in the case of quantum mechanics, the people without the straitjackets are generally the nuts. "

Lawrence M. Krauss

Science

Said

People

" People are interested in science, but they don't always know they're interested in science, and so I try to find a way to get them interested. "

" When it comes to the real operational issues that govern our understanding of physical reality, ontological definitions of classical philosophers are, in my opinion, sterile. "

" I don't know if science and reason will ultimately help guide humanity to a better and more peaceful future, but I am certain that this belief is part of what keeps the 'Star Trek' fandom going. "

" When a person's religious beliefs cause him to deny the evidence of science, or for whom public policy morphs into a battle with the devil, shouldn't that be a subject for discussion and debate? "

" I used to read a lot of science fiction when I was younger. "

" By no definition of any modern scientist is intelligent design science, and it's a waste of our students' time to subject them to it. "

" I have always felt that, aside from research that violates universal human mores, when it comes to technological applications, that which can be done will be done. "

" It never ceases to amaze me that every second of every day, more than 6,000 billion neutrinos coming from nuclear reactions inside the sun whiz through my body, almost all of which will travel right through the earth without interruption. "

Lawrence M. Krauss

Day

Earth

" We need to walk into the future, no matter how unnerving, with open eyes if society is to keep pace with technology. "

" Empirical explorations ultimately change our understanding of which questions are important and fruitful and which are not. "

" I can't prove that God doesn't exist, but I'd much rather live in a universe without one. "

" Aside from communications satellites, space is devoid of industry. "

" The biggest conceptual change over the last 100 years in the way physicists think about the world is symmetry. "

" Local order in parts of the universe is always possible at the expense of heat and disorder dissipated to the external environment. The human body is one example: we take in energy from our environment to build up complex molecules that help power our bodies, and, in doing so, we release heat to the world around us. "

" The rise of a ubiquitous Internet, along with 24-hour news channels has, in some sense, had the opposite effect from what many might have hoped such free and open access to information would have had. It has instead provided free and open access, without the traditional media filters, to a barrage of disinformation. "

" Religious leaders need to be held accountable for their ideas. "

" Donald Trump called for the closing of borders to Muslims; John McCain said, in response to the President's address on the San Bernardino shooting, that 'this is the war of our time.' As that shooting shows, we react to terrorism with far more intensity than we do to an ordinary crime. "

" Scientists don't read theology; they don't read philosophy. It doesn't make any difference to what they're doing - for better or worse, it may not be a value judgment, but it's true. "

" When it comes to the things that people really want in science fiction - like space travel - the simplest things end up causing them not to happen. Humans are 100-pound bags of water, built to live on Earth. "

" A significant fraction of evangelical voters appear more likely to ignore the candidates' specific economic and foreign policy platforms in favor of concerns about gay marriage or abortion. "

" Donald Trump's candidacy has been a source of anxiety for many reasons, but one stands out: the ability of the president to launch nuclear weapons. When it comes to starting a nuclear war, the president has more freedom than he or she does in, say, ordering the use of torture. "

" If our species is to survive, our future will probably require outposts beyond our own planet. "

" Nothing can create something all the time due to the laws of quantum mechanics, and it's - it's fascinatingly interesting. "

" On the question of information security, he claims that, in a Trump Administration, the U.S. government will not spy on its own citizens. If true, this would represent a turn away from the strong language that he has used about identifying terrorists on our soil. "

" Symmetries are the playing field on which the physical world works and which determine the rules of the game. The symmetries of nature determine for us things that remain constant, that can't be changed. Those are the guideposts in physics, the quantities like energy and momentum. "

Lawrence M. Krauss

Energy

Game

" Richard Nixon, famously, conducted his foreign policy according to the 'madman theory': he tried to convince enemy leaders that he was irrational and volatile in an attempt to intimidate them. But this was a potentially useful approach to foreign policy only because it was an act. "

" I was most eager to see how Trump would respond to the climate-change question. "

" One thing I cannot understand - and people are probably going to be upset about this - is why local school boards have control over educational content. "

" What we can do is provide the tools, through our educational system, for people to be able to tell sense from nonsense. These tools include the scientific method, skeptical questioning, empirical evidence, verifying sources, etc. "