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Quantum Theory Quotes

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"Classical physics has been superseded by quantum theory: quantum theory is verified by experiments. Experiments must be described in terms of classical physics." - Carl Friedrich von Weizsacker

"The problem is that replacement of Quantum Mechanics by Quantum Field Theory is still very demanding." - Martin Fleischmann

"If quantum communication and quantum computation are to flourish, a new information theory will have to be developed." - Hans Christian von Baeyer

"There's far more truth in the Book of Genesis than in the quantum theory." - Malcolm Muggeridge

"If [quantum theory] is correct, it signifies the end of physics as a science." - Albert Einstein

"The more success the quantum theory has, the sillier it looks" - Albert Einstein

"Quantum field theory arose out of our need to describe the ephemeral nature of life." - Anthony Zee

"Anyone who is not shocked by quantum theory has not understood it." - Niels Bohr

"For the most part, quantum theory has been of little practical value in my life." - Jenny Diski

"When you look at a vacuum in a quantum theory of fields, it isn't exactly nothing." - Peter Higgs

"I had set out to disprove quantum field theory - and the opposite occurred! I was shocked." - David Gross

"Bell's theorem...proves that quantum theory requires connections that appear to resemble telepathic communication." - Gary Zukav

"In Darwin's theory, you just have to substitute 'mutations' for his 'slight accidental variations' (just as quantum theory substitutes 'quantum jump' for 'continuous transfer of energy'). In all other respects little change was necessary in Darwin's theory..." - Erwin Schrodinger

"Quantum field theory, which was born just fifty years ago from the marriage of quantum mechanics with relativity, is a beautiful but not very robust child." - Steven Weinberg

"If all this damned quantum jumping were really here to stay, I should be sorry, I should be sorry I ever got involved with quantum theory." - Erwin Schrodinger

"If we are going t stick to this damned quantum-jumping, then I regret that I ever had anything to do with quantum theory." - Erwin Schrodinger

"Quantum field theory was originally developed for the treatment of electrodynamics, immediately after the completion of quantum mechanics and the discovery of the Dirac equation." - David Gross

"Quantum mechanics, that brilliantly successful flagship theory of modern science, is deeply mysterious and hard to understand. Eastern mystics have always been deeply mysterious and hard to understand. Therefore, Eastern mystics must have been talking about quantum theory all along." - Richard Dawkins

"It is often stated that of all the theories proposed in this century, the silliest is quantum theory. In fact, some say that the only thing that quantum theory has going for it is that it is unquestionably correct." - Michio Kaku

"There was quantum mechanics, string theory, and then there was the most mind-bending frontier of the natural world, women." - Marisha Pessl

"A person who wasn't outraged on first hearing about quantum theory didn't understand what had been said." - Niels Bohr

"Those who are not shocked when they first come across quantum theory cannot possibly have understood it." - Niels Bohr

"I do feel strongly that string theory is our best hope for making progress at unifying gravity and quantum mechanics." - Brian Greene

"On quantum theory I use up more brain grease (rough translation of German idiom) than on relativity." - Albert Einstein

"God runs electromagnetics by wave theory on Monday, Wednesday, and Friday, and the Devil runs them by quantum theory on Tuesday, Thursday, and Saturday." - William Lawrence Bragg

"God runs electromagnetics by wave theory on Monday, Wednesday, and Friday, and the Devil runs them by quantum theory on Tuesday, Thursday, and Saturday." - William Henry Bragg

"We're going to need a definitive quantum theory of gravity, which is part of a grand unified theory - it's the main missing piece." - Kip Thorne

"I did my masters in elementary particles. But the foundations of elementary particles is quantum theory and there were too many conceptual problems around quantum theory that I couldn't live with. So I decided I was going to work on the foundations of quantum theory. That's what I did my Ph.D on." - Vandana Shiva

"The Theory of Relativity confers an absolute meaning on a magnitude which in classical theory has only a relative significance: the velocity of light. The velocity of light is to the Theory of Relativity as the elementary quantum of action is to the Quantum Theory: it is its absolute core." - Max Planck

"The revolution which began with the creation of quantum theory and relativity theory can only be finished with their unification into a single theory that can give us a single, comprehensive picture of nature." - Lee Smolin

"Quantum mechanics brought an unexpected fuzziness into physics because of quantum uncertainty, the Heisenberg uncertainty principle. String theory does so again because a point particle is replaced by a string, which is more spread out." - Edward Witten

"I wouldn't have thought that a wrong theory should lead us to understand better the ordinary quantum field theories or to have new insights about the quantum states of black holes." - Edward Witten

"Just because quantum mechanics is weird does not mean that everything that is weird is quantum mechanics." - Victor J. Stenger

"Theory can blind observation." - Carol Gilligan

"Everybody has a theory." - Daniel Handler

"Niels Bohr brainwashed a whole generation of theorists into thinking that the job (interpreting quantum theory) was done 50 years ago." - Murray Gell-Mann

"Quantum theory was split up into dialects. Different people describe the same experiences in remarkably different languages. This is confusing even to physicists." - David Finkelstein

"And anyone who thinks they can talk about quantum theory without feeling dizzy hasn't yet understood the first thing about it." - Niels Bohr

"You know that, according to quantum theory, if two particles collide with enough energy you can, in principle, with an infinitesimal probability, produce two grand pianos." - Isidor Isaac Rabi

"You have nothing to do but mention the quantum theory, and people will take your voice for the voice of science, and belive anything." - George Bernard Shaw

"Quantum physics is no longer an abstract theory for specialists. We must now absolutely include it in our education and also in our culture." - Claude Cohen-Tannoudji

"Einstein's theory of relativity does a fantastic job for explaining big things. Quantum mechanics is fantastic for the other end of the spectrum - for small things." - Brian Greene

"The girl I find who wants to talk about quantum theory in a bar is the one I want to marry." - Brandon Boyd

"I take the view that we all have permission to be a little baffled by quantum information science and algorithmic information theory." - James Gleick

"The mathematical framework of quantum theory has passed countless successful tests and is now universally accepted as a consistent and accurate description of all atomic phenomena." - Erwin Schrodinger

"Every string theory that's been written down says the speed of light is universal. But other ideas about quantum gravity predict the speed of light has actually increased." - Lee Smolin

"Ultimately, my Ph.D. is in mathematical physics, focusing on quantum field theory and curved space-time, and I worked with Stephen Hawking." - Nathan Myhrvold

"Einstein was searching for String Theory. It not only reconciles General Relativity to Quantum Mechanics, but it reconciles Science and the Bible as well." - Roy H Williams

"There was a long history of speculation that in quantum gravity, unlike Einstein's classical theory, it might be possible for the topology of spacetime to change." - Edward Witten

"I cannot seriously believe in it [quantum theory] because the theory cannot be reconciled with the idea that physics should represent a reality in time and space, free from spooky actions at a distance [spukhafte Fernwirkungen]." - Albert Einstein

"In Einstein's theory of relativity the observer is a man who sets out in quest of truth armed with a measuring-rod. In quantum theory he sets out with a sieve." - Arthur Eddington

"The mathematical framework of quantum theory has passed countless successful tests and is now universally accepted as a consistent and accurate description of all atomic phenomena. The verbal interpretation, on the other hand - i.e., the metaphysics of quantum theory - is on far less solid ground. In fact, in more than forty years physicists have not been able to provide a clear metaphysical model." - Fritjof Capra

"Combining quantum entanglement with wormholes yields mind boggling results about black holes. But I don't trust them until we have a theory of everything which can combine quantum effects with general relativity. i.e. we need to have a full blown string theory resolve this sticky question." - Michio Kaku

"My training in science is actually one that is very critical of mechanistic science. I was trained in quantum theory which emerged at the turn of the last century. We are a whole century behind in absorbing the leaps that quantum theory made for the human mind." - Vandana Shiva

"String theory is the most developed theory with the capacity to unite general relativity and quantum mechanics in a consistent manner. I do believe the universe is consistent, and therefore I do believe that general relativity and quantum mechanics should be put together in a manner that makes sense." - Brian Greene

"The incomplete knowledge of a system must be an essential part of every formulation in quantum theory. Quantum theoretical laws must be of a statistical kind. To give an example: we know that the radium atom emits alpha-radiation. Quantum theory can give us an indication of the probability that the alpha-particle will leave the nucleus in unit time, but it cannot predict at what precise point in time the emission will occur, for this is uncertain in principle." - Werner Heisenberg

"Scientific realism in classical (i.e. pre-quantum) physics has remained compatible with the naive realism of everyday thinking on the whole; whereas it has proven impossible to find any consistent way to visualize the world underlying quantum theory in terms of our pictures in the everyday world. The general conclusion is that in quantum theory naive realism, although necessary at the level of observations, fails at the microscopic level." - Ravi Gomatam

"Theory without data is myth: data without theory is madness." - Phil Zuckerman

"Was Einstein's theory good? Relatively." - Bo Burnham

"Set theory in sheep's clothing." - Willard Van Orman Quine

"Funeral by funeral, theory advances." - Paul Samuelson

"Architecture theory is very interesting." - David Byrne

"Mainstream economics scholarship produces theory without facts (pure theory) and facts without theory" - Michel Chossudovsky

"It is a remarkable fact that the second law of thermodynamics has played in the history of science a fundamental role far beyond its original scope. Suffice it to mention Boltzmann's work on kinetic theory, Planck's discovery of quantum theory or Einstein's theory of spontaneous emission, which were all based on the second law of thermodynamics." - Ilya Prigogine

"When you look at the calculation, it's amazing that every time you try to prove or disprove time travel, you've pushed Einstein's theory to the very limits where quantum effects must dominate. That's telling us that you really need a theory of everything to resolve this question. And the only candidate is string theory." - Michio Kaku

"The most important single thing about string theory is that it's a highly mathematical theory, and the mathematics holds together in a very tight and consistent way. It contains in its basic structure both quantum mechanics and the theory of gravity. That's big news." - Leonard Susskind

"When the province of physical theory was extended to encompass microscopic phenomena through the creation of quantum mechanics, the concept of consciousness came to the fore again. It was not possible to formulate the laws of quantum mechanics in a fully consistent way without reference to the consciousness." - Eugene Wigner

"I'm really fascinated by the parallels between quantum theory and the teachings of some of these ancient texts. So many of the things that quantum physicists are talking about today, like nonlocality and the observer effect, are things the yogis have been saying for thousands of years." - Beryl Bender Birch

"'Participant' is the incontrovertible new concept given by quantum mechanics. It strikes down the 'observer' of classical theory, the man who stands safely behind the thick glass wall and watches what goes on without taking part. It can't be done, quantum mechanics says it...May the universe in some sense be 'brought into being' by the participation of those who participate?" - John Archibald Wheeler

"We could tell them [alien civilization] things that we have discovered in the realm of mathematical physics, but there is stuff that I would like to know. There are some famous problems like how to bring gravitation and quantum physics together, the long-sought-after theory of quantum gravity. But it may be hard to understand the answer that comes back." - Paul Davies

"The great revelation of the quantum theory was that features of discreteness were discovered in the Book of Nature, in a context in which anything other than continuity seemed to be absurd according to the views held until then." - Erwin Schrodinger

"Despite the unrivaled empirical success of quantum theory, the very suggestion that it may be literally true as a description of nature is still greeted with cynicism, incomprehension, and even anger." - David Deutsch

"In quantum theory, distance is inverse to energy, because you need particles of very high energy to probe very short distances. The inverse of the Planck energy is the Planck length." - Lee Smolin

"Quantum theory also tells us that the world is not simply objective; somehow it's something more subtle than that. In some sense it is veiled from us, but it has a structure that we can understand." - John Polkinghorne

"There's a branch of math called the foundations of math. It's kind of like quantum mechanics. It's about how this very complex theory of math can be built up from very basic parts." - Tristan Perich

"[On quantum theory:] It is hard to sneak a look at God's cards. But that he would choose to play dice with the world... is something I cannot believe for a single moment." - Albert Einstein

"Professor [Max] Planck of Berlin, the famous originator of the Quantum Theory, once remarked to me that in early life he had thought of studying economics, but had found it too difficult!" - John Maynard Keynes

"But how is one to make a scientist understand that there is something unalterably deranged about differential calculus, quantum theory, or the obscene and so inanely liturgical ordeals of the precession of the equinoxes." - Antonin Artaud

"The theory of quantum electrodynamics describes Nature as absurd from the point of view of common sense. And it agrees fully with experiment. So I hope you accept Nature as She is - absurd." - Richard Feynman

"I read a lot of science books - I love cosmology, quantum theory, particle physics. So my idea of a great read would probably put you directly into a coma." - Augusten Burroughs

"The modern physicist is a quantum theorist on Monday, Wednesday, and Friday and a student of gravitational relativity theory on Tuesday, Thursday, and Saturday. On Sunday he is praying... that someone will find the reconciliation between the two views." - Norbert Wiener

"Quantum theory provides us with a striking illustration of the fact that we can fully understand a connection though we can only speak of it in images and parables." - Werner Heisenberg

"Quantum theory also tells us that the world is not simply objective; somehow it's something more subtle than that. In some sense it is veiled from us, but it has a structure that we can understand." - John Polkinghorne

"There certainly is a tension between the relativity of simultaneity and non-locality in quantum theory, but it's not strong enough to add up to a falsification of either side by itself." - Lee Smolin

"If you start any large theory, such as quantum mechanics, plate tectonics, evolution, it takes about 40 years for mainstream science to come around. Gaia has been going for only 30 years or so." - James Lovelock

"The scientists often have more unfettered imaginations than current philosophers do. Relativity theory came as a complete surprise to philosophers, and so did quantum mechanics, and so did other things." - Robert Nozick

"If you aren't confused by quantum mechanics, you haven't really understood it." - Niels Bohr

"Science may be weird and incomprehensible-more weird and less comprehensible than any theology-but science works. It gets results. It can fly you to Saturn, slingshotting you around Venus and Jupiter on the way. We may not understand quantum theory (heaven knows, I don't), but a theory that predicts the real world to ten decimal places cannot in any straightforward sense be wrong." - Richard Dawkins

"I think it's a theory, the theory of evolution and I don't accept it as a theory." - Ron Paul

"Indeed, this epistemological theory of the relation between theory and experiment differs sharply from the epistemological theory of naive falsificationism." - Imre Lakatos

"Yoga is 99% practice and 1% theory." - K. Pattabhi Jois

"There is no knowledge without theory." - W Edwards Deming

"We want best efforts guided by theory." - W Edwards Deming

"Without theory we can only copy." - W Edwards Deming

"Without theory, there are no questions." - W Edwards Deming

"That's not a conspiracy theory, it's history." - James Dye

"My theory on education is... get one." - Mary Matalin

"The theory must not contradict empirical facts," - Albert Einstein

"People are experience-rich and theory-poor." - Malcolm Gladwell

"Gray is the color of all theory" - Johann Wolfgang von Goethe

"A theory that explains everything, explains nothing" - Karl Popper

"I don't hold water with that theory" - Ron Greenwood

"Perfectly correct chess exists only in theory." - Garry Kasparov

"Not every conspiracy is a theory," - James Badge Dale

"In art, practice always comes before theory." - Pablo Picasso

"Deism is compatible with evolutionary theory." - Elliott Sober

"I don't like writing essays or theory." - Adrian Mitchell

"A theory must be tempered with reality." - Jawaharlal Nehru

""There's been a quantum leap technologically in our age, but unless there's another quantum leap in human relations, unless we learn to live in a new way towards one another, there will be a catastrophe."" - Albert Einstein

"When things get tough, there are two things that make life worth living: Mozart, and quantum mechanics" - Victor Frederick Weisskopf

"Nature allows only experimental situations to occur which can be described within the framework of the formalism of quantum mechanics" - Werner Heisenberg

"I'm fascinated with quantum physics." - William

"Theory and practice sometimes clash. And when that happens, theory loses. Every single time." - Linus Torvalds

"Recreational number theory [...] is that part of number theory that is too difficult to study." - Hendrik Lenstra

"No particular theory may ever be regarded as absolutely certain.... No scientific theory is sacrosanct..." - Karl Popper

"I don't think that design needs theory, but I think designers need theory." - Johanna Drucker

"When the fact doesn't meet the theory then let go the theory." - Agatha Christie

"In theory, there is no difference between theory and practice; In practice, there is." - Chuck Reid

"Before you've practiced, the theory is useless. After you've practiced, the theory is obvious." - David Williams

"In theory, theory and practice are the same. In practice, they are not." - Albert Einstein

"In theory there is no difference between theory and practice. In practice there is." - Yogi Berra

"In theory, there is no difference between theory and practice. But, in practice, there is." - Manfred Eigen

"In theory, practice should work like theory. In practice, it doesn't." - Yogi Berra

"Never abandon a theory that explains something until you have a theory that explains more." - John Mccarthy

"If facts conflict with a theory, either the theory must be changed or the facts." - Baruch Spinoza

"No theory changes what it is a theory about; man remains what he has always been." - B F Skinner

"The theory of evolution, like the theory of gravity, is a scientific fact." - Neil Degrasse Tyson

"The basic theory in twistor theory is not to add extra dimensions." - Roger Penrose

"Henceforth, whilst there are a great many theories and models proposed as to how, or why, magic works (based on subtle energies, animal magnetism, psychological concepts, quantum theory, mathematics or the so-called anthropomorphic principle) it is not a case that one of them is more 'true' than others, but a case of which theory or model you choose to believe in, or which theory you find most attractive. Indeed, from a Chaos Magic perspective, you can selectively believe that a particular theory or model of magical action is true only for the duration of a particular ritual or phase of work." - Phil Hine

"Renormalization is just a stop-gap procedure. There must be some fundamental change in our ideas, probably a change just as fundamental as the passage from Bohr's orbit theory to quantum mechanics. When you get a number turning out to be infinite which ought to be finite, you should admit that there is something wrong with your equations, and not hope that you can get a good theory just by doctoring up that number." - Paul Dirac

"The shell game that we play ... is technically called 'renormalization'. But no matter how clever the word, it is still what I would call a dippy process! Having to resort to such hocus-pocus has prevented us from proving that the theory of quantum electrodynamics is mathematically self-consistent. It's surprising that the theory still hasn't been proved self-consistent one way or the other by now; I suspect that renormalization is not mathematically legitimate." - Richard P Feynman

"It would take a civilization far more advanced than ours, unbelievably advanced, to begin to manipulate negative energy to create gateways to the past. But if you could obtain large quantities of negative energy-and that's a big "IF"-then you could create a time machine that apparently obeys Einstein's equation and perhaps the laws of quantum theory." - Michio Kaku

"Quantum mechanics is certainly imposing. But an inner voice tells me that this is not yet the real thing. The theory says a lot, but does not bring us any closer to the secrets of the "Old One." I, at any rate, am convinced that He is not playing at dice." - Albert Einstein

"There was a time when the newspapers said that only twelve men understood the theory of relativity. I do not believe there ever was such a time ... On the other hand, I think I can safely say that nobody understands quantum mechanics." - Richard P Feynman

"I count Maxwell and Einstein, Eddington and Dirac, among "real" mathematicians. The great modern achievements of applied mathematics have been in relativity and quantum mechanics, and these subjects are at present at any rate, almost as "useless" as the theory of numbers." - G H Hardy

"?By 2100, our destiny is to become like the gods we once worshipped and feared. But our tools will not be magic wands and potions but the science of computers, nanotechnology, artificial intelligence, biotechnology, and most of all, the quantum theory." - Michio Kaku

"I have a theory which I suspect is rather immoral,' Smiley went on, more lightly. 'Each of us has only a quantum of compassion. That if we lavish our concern on every stray cat, we never get to the centre of things." - John Le Carre

"The treatment of the indeterminacy principle as absolute and final can then be criticized as constituting an arbitrary restriction on scientific theories, since it does not follow from the quantum theory as such, but rather from the assumption of the unlimited validity of certain of its features, an assumption that can in no way ever be subjected to experimental proof." - David Bohm

"Quantum mechanics is very impressive. But an inner voice tells me that it is not yet the real thing. The theory yields a lot, but it hardly brings us any closer to the secret of the Old One. In any case I am convinced that He doesn't play dice." - Albert Einstein

"The quantum theory of parallel universes is not the problem, it is the solution. It is not some troublesome, optional interpretation emerging from arcane theoretical considerations. It is the explanation, the only one that is tenable, of a remarkable and counter-intuitive reality." - David Deutsch

"Einstein comes along and says, space and time can warp and curve, that's what gravity is. Now string theory comes along and says, yes, gravity, quantum mechanics, electromagnetism - all together in one package, but only if the universe has more dimensions than the ones that we see." - Brian Greene

"Bells theorem dealt a shattering blow to Einsteins position by showing that the conception of reality as consisting of separate parts, joined by local connections, is incompatible with quantum theory... Bells theorem demonstrates that the universe is fundamentally interconnected, interdependent, and inseparable." - Fritjof Capra

"String theory?[pause] It closed the conceptual gulp between relativity and quantum mechanics. It postulates that subatomic particles are not points, but strings, about one planck length long. The rate at which strings vibrate can generate the properties of all known particles. Huh? How did I know that?" - Willie Garson

"The quantum hologram is a mechanism to explain this concept of the ancients of the Akashic Records. It also explains Rupert Sheldrake's work among animals [his theory of morphic fields and morphic resonance, leading to a vision of a living, developing universe with its own inherent memory]." - Edgar Mitchell

"General relativity is in the old Newtonian framework where you predict what will happen, not the probability of what will happen. And putting together the probabilities of quantum mechanics with the certainty of general relativity, that's been the big challenge and that's why we have been excited about string theory, as it's one of the only approaches that can put it together." - Brian Greene

"Quantum mechanics is very worthy of regard. But an inner voice tells me that this is not yet the right track. The theory yields much, but it hardly brings us closer to the Old One's secrets. I, in any case, am convinced that He does not play dice." - Albert Einstein

"Quantum mechanics is certainly imposing. But an inner voice tells me that it is not yet the real thing. The theory says a lot, but does not really bring us any closer to the secret of the old one. I, at any rate, am convinced that He does not throw dice." - Albert Einstein

"Before the quantum theory appeared, the principle of the uniformity of nature - that like causes produce like effects - had been accepted as a universal and indisputable fact of science. As soon as the atomicity of radiation became established, this principle had to be discarded." - James Jeans

"By 2100, our destiny is to become like the gods we once worshipped and feared. But our tools will not be magic wands and potions but the science of computers, nanotechnology, artificial intelligence, biotechnology, and most of all, the quantum theory." - Michio Kaku

"The very nature of the quantum theory ... forces us to regard the space-time coordination and the claim of causality, the union of which characterizes the classical theories, as complementary but exclusive features of the description, symbolizing the idealization of observation and description, respectively." - Niels Bohr



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