104 Inspiring Physics Quotes

Physics, often regarded as the fundamental science, offers a profound glimpse into the workings of the universe. It challenges our perception of reality, igniting curiosity and inspiring innovation. Throughout history, great minds have shared their wisdom, encapsulating the essence of physics in thought-provoking quotes. These quotes not only reflect the beauty and complexity of physics but also inspire us to look beyond the obvious and question the nature of existence. In this blog post, we have curated a collection of 104 inspiring physics quotes that capture the timeless wisdom and transformative power of this captivating field. Whether you are a seasoned physicist or a curious enthusiast, these quotes will motivate and inspire you to explore the intricate dance of matter and energy that governs our world.

1. “Physics isn't the most important thing. Love is.” - Richard P. Feynman

2. “Photons have mass? I didn’t even know they were Catholic.” - Woody Allen

3. “No, this trick won't work... How on earth are you ever going to explain in terms of chemistry and physics so important a biological phenomenon as first love? ” - Albert Einstein

4. “I'll be looking for you, Will, every moment, every single moment. And when we do find each other again, we'll cling together so tight that nothing and no one'll ever tear us apart. Every atom of me and every atom of you... We'll live in birds and flowers and dragonflies and pine trees and in clouds and in those little specks of light you see floating in sunbeams... And when they use our atoms to make new lives, they wont' just be able to take one, they'll have to take two, one of you and one of me, we'll be joined so tight...” - Philip Pullman

5. “How wonderful that we have met with a paradox. Now we have some hope of making progress.” - Niels Bohr

6. “In the beginning there was nothing, which exploded.” - Terry Pratchett

7. “The only thing known to go faster than ordinary light is monarchy, according to the philosopher Ly Tin Wheedle. He reasoned like this: you can't have more than one king, and tradition demands that there is no gap between kings, so when a king dies the succession must therefore pass to the heir instantaneously. Presumably, he said, there must be some elementary particles -- kingons, or possibly queons -- that do this job, but of course succession sometimes fails if, in mid-flight, they strike an anti-particle, or republicon. His ambitious plans to use his discovery to send messages, involving the careful torturing of a small king in order to modulate the signal, were never fully expanded because, at that point, the bar closed.” - Terry Pratchett

8. “...in microphysics the observer interferes with the experiment in a way that can't be measured and that therefore can't be eliminated. No natural laws can be formulated, saying "such-and-such will happen in every case." All the microphysicist can say is "such-and-such is, according to statistical probability, likely to happen." This naturally represents a tremendous problem for our classical physical thinking. It requires a consideration, in a scientific experiment, of the mental outlook of the participant-observer: It could this be said that scientists can no longer hope to describe any aspects or qualities of outer objects in a completely independent, "objective" manner.” - M.-L. von Franz

9. “The death of God left the angels in a strange position.” - Donald Barthelme

10. “Physicists like to think that all you have to do is say, these are the conditions, now what happens next?” - Richard P. Feynman

11. “One possibility is: God is nothing but the power of the universe to organize itself.” - Lee Smolin

12. “Nonsense is that which does not fit into the prearranged patterns which we have superimposed on reality...Nonsense is nonsense only when we have not yet found that point of view from which it makes sense.” - Gary Zukav

13. “If you see an antimatter version of yourself running towards you, think twice before embracing.” - J. Richard Gott

14. “It was quite the most incredible event that has ever happened to me in my life. It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you.[Recalling in 1936 the discovery of the nucleus in 1909, when some alpha particles were observed instead of travelling through a very thin gold foil were seen to rebound backward, as if striking something much more massive than the particles themselves. He won the Nobel Prize in Chemistry for this discovery.]” - Ernest Rutherford

15. “What's the matter? What's the antimatter? Does it antimatter?” - Wes Nisker

16. “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

17. “He (Comings) has in the past performed successful energy-converting experiments, creating a ringing resonance by injecting certain frequencies into piezo-electric crystals. When the crystal was in resonance with the plenum of space, the power output rose significantly higher than the input. He concluded that, if allowed politically, such discoveries could guide humankind in building a completely clean energy infrastructure -- resonant technologies that allow us to live in harmony with the universal energy field and the Earth.” - Jeane Manning

18. “Physics is really nothing more than a search for ultimate simplicity, but so far all we have is a kind of elegant messiness.” - Bill Bryson

19. “For decades, new-energy researchers talked about the possibility of treating a magnet so that its magnetic field would continuously shake or vibrate. On rare occasions, Sweet saw this effect, called self-oscillation, occur in electric transformers. He felt it could be coaxed into doing something useful, such as producing energy. Sweet thought that if he could find the precise way to shake or disturb a magnet's force field, the field would continue to shake by itself. It would be similar to striking a bell and having the bell keep on ringing. Sweet - who said his ideas came to him in dreams - turned for inspiration to his expertise in magnets. He knew magnets could be used to produce electricity, and wanted to see if he could get power out of a magnet by something other than the standard induction process. What Sweet wanted to do was to keep the magnet still and just shake its magnetic field. This shaking, in turn, would create an electric current. One new-energy researcher compares self-oscillation to a leaf on a tree waving in a gentle breeze. While the breeze itself isn't moving back and forth, it sets the leaf into that kind of motion. Sweet thought that if cosmic energy could be captured to serve as the breeze, then the magnetic field would serve as the leaf. Sweet would just have to supply a small amount of energy to set the magnetic field in motion, and space energy would keep it moving.” - Jeane Manning

20. “The first principle of value that we need to rediscover is this: that all reality hinges on moral foundations. In other words, that this is a moral universe, and that there are moral laws of the universe just as abiding as the physical laws. (from "Rediscovering Lost Values")” - Martin Luther King Jr.

21. “Assessing existence while failing to embrace the insights of modern physics would be like wrestling in the dark with an unknown opponent.” - Brian Greene

22. “God abhors a naked singularity.” - Stephen Hawking

23. “He was a physicist, more precisely an astrophysicist, diligent and eager but without illusions: the Truth lay beyond, inaccessible to our telescopes, accessible to the initiates. This was a long road which he was traveling with effort, wonderment, and profound joy. Physics was prose: elegant gymnastics for the mind, mirror of Creation, the key to man's dominion over the planet; but what is the stature of Creation, of man and the planet? His road was long and he had barely started up it, but I was his disciple: did I want to follow him?” - Primo Levi

24. “Time and space are finite in extent, but they don't have any boundary or edge. They would be like the surface of the earth, but with two more dimensions.” - Stephen W. Hawking

25. “Give me a place to stand, a lever long enough and a fulcrum. and I can move the Earth” - Archimedes

26. “The simple process of eating and breathing weave all of us together into a vast four-dimensional array. No matter how isolated you may sometimes feel, no matter how lonely, you are never really cut off from the whole.” - Rudy Rucker

27. “When it came time for me to give my talk on the subject, I started off by drawing an outline of the cat and began to name the various muscles.The other students in the class interrupt me: "We *know* all that!""Oh," I say, "you *do*? Then no *wonder* I can catch up with you so fast after you've had four years of biology." They had wasted all their time memorizing stuff like that, when it could be looked up in fifteen minutes.” - Richard P. Feynman

28. “Consciousness cannot be accounted for in physical terms. For consciousness is absolutely fundamental. It cannot be accounted for in terms of anything else.” - Erwin Schrödinger

29. “I remember discussions with Bohr which went through many hours till very late at night and ended almost in despair; and when at the end of the discussion I went alone for a walk in the neighbouring park I repeated to myself again and again the question: Can nature possibly be so absurd as it seemed to us in these atomic experiments?” - Werner Heisenberg

30. “At one point in the story, following a brazen daytime bank robbery, Electro is shown escaping from the authorities by climbing up the side of a building, as easily as Spider-Man . . . we see one observer exclaim, "Look!! That strangely-garbed man is racing up the side of the building!" A second man on the street picks up the narrative: "He's holding on to the iron beams in the building by means of electric rays—using them like a magnet!! Incredible!"There are three feelings inspired by this scene. The first is wonder as to why people rarely use the phrase "strangely-garbed" anymore. The second is nostalgia for the bygone era when pedestrians would routinely narrate events occurring in front of them, providing exposition for any casual bystander. And the third is pleasure at the realization that Electro's climbing this building is actually a physically plausible use of his powers.” - James Kakalios

31. “And a new philosophy emerged called quantum physics, which suggest that the individual’s function is to inform and be informed. You really exist only when you’re in a field sharing and exchanging information. You create the realities you inhabit.” - Timothy Leary

32. “...quantum mechanics—the physics of our world—requires that you hold such pedestrian complaints in abeyance.” - Brian Greene

33. “The highest court is in the end one’s own conscience and conviction—that goes for you and for Einstein and every other physicist—and before any science there is first of all belief.” - Max Planck

34. “The difficulty lay with the mind accommodating itself to the notion of the plane, with all its weight, defying gravity, staying aloft. She understood the aerodynamics of flight, could comprehend the laws of physics that made flight possible, but her heart, at the moment, would have none of it. Her heart knew the plane could fall out of the sky.” - Anita Shreve

35. “The time has come to realise that an interpretation of the universe—even a positivist one—remains unsatisfying unless it covers the interior as well as the exterior of things; mind as well as matter. The true physics is that which will, one day, achieve the inclusion of man in his wholeness in a coherent picture of the world.” - Pierre Teilhard De Chardin

36. “I tell you about a fact and truth. In physical reality of matter, there's no such thing as an imaginary spirit nor spiritual ghost. They are also made of matter, but totally different in size andlaws of physics which rule their life and the way they interact.” - Toba Beta

37. “I recently forced myself to read a book on quantum physics, just to try and learn something new. I was confused by the middle of the first sentence and it all went downhill from there. The only thing I can remember learning is that a parallel universe can theoretically be contained on the head of a needle. I don't really know what that means, but I am now more careful handling needles.” - Stephan Pastis

38. “There's no obvious reason to assume that the very same rare properties that allow for our existence would also provide the best overall setting to make discoveries about the world around us. We don't think this is merely coincidental. It cries out for another explanation, an explanation that... points to purpose and intelligent design in the cosmos.” - Guillermo Gonzalez

39. “I think that modern physics has definitely decided in favor of Plato. In fact the smallest units of matter are not physical objects in the ordinary sense; they are forms, ideas which can be expressed unambiguously only in mathematical language.” - Werner Heisenberg

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

41. “Not only is the Universe stranger than we think, it is stranger than we can think.” - Werner Heisenberg

42. “We ought to regard the present state of the universe as the effect of its antecedent state and as the cause of the state that is to follow. An intelligence knowing all the forces acting in nature at a given instant, as well as the momentary positions of all things in the universe, would be able to comprehend in one single formula the motions of the largest bodies as well as the lightest atoms in the world, provided that its intellect were sufficiently powerful to subject all data to analysis; to it nothing would be uncertain, the future as well as the past would be present to its eyes. The perfection that the human mind has been able to give to astronomy affords but a feeble outline of such an intelligence.” - Pierre Simon de Laplace

43. “We know that energy can not be created nor destroyed but can be changed in it's form. If it can not be formed then it can not exist. We may not exist.” - Mohammed Ali

44. “Each religion makes scores of purportedly factual assertions about everything from the creation of the universe to the afterlife. But on what grounds can believers presume to know that these assertions are true? The reasons they give are various, but the ultimate justification for most religious people’s beliefs is a simple one: we believe what we believe because our holy scriptures say so. But how, then, do we know that our holy scriptures are factually accurate? Because the scriptures themselves say so. Theologians specialize in weaving elaborate webs of verbiage to avoid saying anything quite so bluntly, but this gem of circular reasoning really is the epistemological bottom line on which all 'faith' is grounded. In the words of Pope John Paul II: 'By the authority of his absolute transcendence, God who makes himself known is also the source of the credibility of what he reveals.' It goes without saying that this begs the question of whether the texts at issue really were authored or inspired by God, and on what grounds one knows this. 'Faith' is not in fact a rejection of reason, but simply a lazy acceptance of bad reasons. 'Faith' is the pseudo-justification that some people trot out when they want to make claims without the necessary evidence.But of course we never apply these lax standards of evidence to the claims made in the other fellow’s holy scriptures: when it comes to religions other than one’s own, religious people are as rational as everyone else. Only our own religion, whatever it may be, seems to merit some special dispensation from the general standards of evidence.And here, it seems to me, is the crux of the conflict between religion and science. Not the religious rejection of specific scientific theories (be it heliocentrism in the 17th century or evolutionary biology today); over time most religions do find some way to make peace with well-established science. Rather, the scientific worldview and the religious worldview come into conflict over a far more fundamental question: namely, what constitutes evidence.Science relies on publicly reproducible sense experience (that is, experiments and observations) combined with rational reflection on those empirical observations. Religious people acknowledge the validity of that method, but then claim to be in the possession of additional methods for obtaining reliable knowledge of factual matters — methods that go beyond the mere assessment of empirical evidence — such as intuition, revelation, or the reliance on sacred texts. But the trouble is this: What good reason do we have to believe that such methods work, in the sense of steering us systematically (even if not invariably) towards true beliefs rather than towards false ones? At least in the domains where we have been able to test these methods — astronomy, geology and history, for instance — they have not proven terribly reliable. Why should we expect them to work any better when we apply them to problems that are even more difficult, such as the fundamental nature of the universe?Last but not least, these non-empirical methods suffer from an insuperable logical problem: What should we do when different people’s intuitions or revelations conflict? How can we know which of the many purportedly sacred texts — whose assertions frequently contradict one another — are in fact sacred?” - Alan Sokal

45. “The mathematicians are the priests of the modern world.” - Bill Gaede

46. “Define the word exist, and you'll know whether God exists.” - Bill Gaede

47. “A relativist is an individual who doesn't know the difference between an adjective and an adverb.” - Bill Gaede

48. “Extinction catches Man by surprise because no one can even imagine that such a catastrophe can happen to an intelligent species.” - Bill Gaede

49. “The Heart of Gold fled on silently through the night of space, now on conventional photon drive. Its crew of four were ill as ease knowing that they had been brought together not of their own volition or by simple coincidence, but by some curious perversion of physics- as if relationships between people were susceptible to the same laws that governed the relationships between atoms and molecules” - Douglas Adams

50. “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.” - Neil deGrasse Tyson

51. “Each of us is aware he's a material being, subject to the laws of physiology and physics, and that the strength of all our emotions combined cannot counteract those laws. It can only hate them. The eternal belief of lovers and poets in the power of love which is more enduring that death, the finis vitae sed non amoris that has pursued us through the centuries is a lie. But this lie is not ridiculous, it's simply futile. To be a clock on the other hand, measuring the passage of time, one that is smashed and rebuilt over and again, one in whose mechanism despair and love are set in motion by the watchmaker along with the first movements of the cogs. To know one is a repeater of suffering felt ever more deeply as it becomes increasingly comical through a multiple repetitions. To replay human existence - fine. But to replay it in the way a drunk replays a corny tune pushing coins over and over into the jukebox?” - Stanisław Lem

52. “If you can't illustrate 'it', 'it' doens't belong in Physics as a noun! You can't put an article in front. You can't put a verb after!” - Bill Gaede

53. “Same as you, Arthur. I hitched a ride. After all, with a degree in maths and another in astrophysics it was either that or back to the dole queue on Monday. Sorry I missed the Wednesday lunch date, but I was in a black hole all morning.” - Douglas Adams

54. “‎In modern physics, there is no such thing as "nothing." Even in a perfect vacuum, pairs of virtual particles are constantly being created and destroyed. The existence of these particles is no mathematical fiction. Though they cannot be directly observed, the effects they create are quite real. The assumption that they exist leads to predictions that have been confirmed by experiment to a high degree of accuracy.” - Richard Morris

55. “Maybe knowledge is as fundamental, or even more fundamental than [material] reality.” - Anton Zeilinger

56. “The bright sun was extinguish'd, and the starsDid wander darkling in the eternal space.” - Lord Byron George Gordon

57. “Many physicists these days sound like the Delphic oracle - with equations.” - John Twelve Hawks

58. “Something deeply hidden had to be behind things.” - Albert Einstein

59. “All have the ability to perceive and live in dimensional synthesis, yet they spend time with the sciences trying to separate these realms, splitting the worlds into minutia, seeking the god particle. They are searching high and low, 'out there', for the source of it all, but no matter how many accelerators they build, no matter how far they go, they will never find the source ‘out there’ because the source is within” - Juliana Loomer

60. “Without the time, the world is only a static material; without the sense, the world is only a dead living system” - Aditia Rinaldi

61. “Relationships are physics. Time transforms things- it has to, because the change from me to we means clearing away the fortifications you'r put up around your old personality. Living with Susannah made me feel as if I started riding Einstein's famous theoretical bus. Here's my understanding of that difficult idea, nutshelled: if you're riding a magic Greyhound, equipped for light-speed travel, you'll actually live though less time than will any pedestrians whom the bus passes by. So, for a neighbor on the street with a stopwatch, the superfast bus will take two hours to travel from Point A to Point B. But where you're on that Greyhound, and looking at the wipe of the world out those rhomboidial coach windows, the same trip will take just under twenty-four minutes. Your neighbor, stopwatch under thumb, will have aged eighty-six percent more than you have. It's hard to fathom. But I think it's exactly what adult relationships do to us: on the outside, years pass, lives change. But inside, it's just a day that repeats. You and your partner age at the same clip; it seems not time has gone by. Only when you look up from your relationship- when you step off the bus, feel the ground under your shoes- do you sense the sly, soft absurdity of romance physics.” - Darin Strauss

62. “Indubitably, Magick is one of the subtlest and most difficult of the sciences and arts. There is more opportunity for errors of comprehension, judgement and practice than in any other branch of physics.” - Aleister Crowley

63. “The miracle of the appropriateness of the language of mathematics for the formulation of the laws of physics is a wonderful gift which we neither understand nor deserve. We should be grateful for it and hope that it will remain valid in future research and that it will extend, for better or for worse, to our pleasure, even though perhaps also to our bafflement, to wide branches of learning.” - Eugene Paul Wigner

64. “The opposite of a correct statement is an incorrect statement. The opposite of a profound truth is another profound truth (Niels Bohr)." By this, he means that we require a larger reading of the human past, of our relations with each other, the universe and God, a retelling of our older tales to encompass many truths and to let us grow with change.” - Neil Postman

65. “Both [Quine and Feyerabend] want to revise a version of positivism. Quine started with the Vienna Circle, and Feyerabend with the Copenhagen school of quantum mechanics. Both the Circle and the school have been called children of Ernst Mach; if so, the philosophies of Feyerabend and Quine must be his grandchildren.” - Ian Hacking

66. “The myth of quantum consciousness sits well with many whose egos have made it impossible for them to accept the insignificant place science perceives for humanity, as modern instruments probe the farthest reaches of space and time. ... quantum consciousness has about as much substance as the aether from which it is composed. Early in this century, quantum mechanics and Einstein’s relativity destroyed the notion of a holistic universe that had seemed within the realm of possibility in the century just past. First, Einstein did away with the aether, shattering the doctrine that we all move about inside a universal, cosmic fluid whose excitations connect us simultaneously to one another and to the rest of the universe. Second, Einstein and other physicists proved that matter and light were composed of particles, wiping away the notion of universal continuity. Atomic theory and quantum mechanics demonstrated that everything, even space and time, exists in discrete bits – quanta. To turn this around and say that twentieth century physics initiated some new holistic view of the universe is a complete misrepresentation of what actually took place. ... The myth of quantum consciousness should take its place along with gods, unicorns, and dragons as yet another product of the fantasies of people unwilling to accept what science, reason, and their own eyes tell them about the world.” - Victor J. Stenger

67. “The people who actually make the advances in theoretical physics don't think in these categories that the philosophers and the historians of science subsequently invent for them” - Stephen Hawking

68. “David Park is a physicist and philosopher at Williams College in Massachusetts with a lifelong interest in a time which he too thinks doesn't pass. For Park, the passage of time is not so much an illusion as a myth, "because it involves no deception of the senses.... One cannot perform any experiment to tell unambiguously whether time passes or not." This is certainly a telling argument. After all, what reality can be attached to a phenomenon that can never be demonstrated experimentally? In fact, it is not even clear how to think about demonstrating the flow of time experimentally. As the apparatus, laboratory, experimenter, technicians, humanity generally and the universe as a whole are apparently caught up in the same inescapable flow, how can any bit of the universe be "stopped in time" in order to register the flow going on in the rest of it? It is analogous to claiming that the whole universe is moving through space at the same speed—or, to make the analogy closer, that space is moving through space. How can such a claim ever be tested?” - Paul Davies

69. “As to your Newton, I confess I do not understand his void and his gravity; I admit he has demonstrated the movement of the heavenly bodies with more exactitude than his forerunners; but you will admit it is an absurdity to maintain the existence of Nothing.[Letter to Voltaire, 25 Nov. 1777]” - Frederick The Great

70. “We have sought for firm ground and found none. The deeper we penetrate, the more restless becomes the universe; all is rushing about and vibrating in a wild dance.” - Max Born

71. “Ideas that require people to reorganize their picture of the world provoke hostility.” - James Gleick

72. “Time and space were, from Death's point of view, merely things that he'd heard described. When it came to Death, they ticked the box marked Not Applicable. It might help to think of the universe as a rubber sheet, or perhaps not.” - Terry Pratchett

73. “Physics admits of a lovely unification, not just at the level of fundamental forces, but when considering its extent and implications. Classifications like "optics" or "thermodynamics" are just straitjackets, preventing physicists from seeing countless intersections.” - Ted Chiang

74. “Subjectivity is strange to Science, while Relativity is an objective part of it.” - Felix Alba-Juez

75. “Until now, I've been writing about "now" as if it were literally an instant of time, but of course human faculties are not infinitely precise. It is simplistic to suppose that physical events and mental events march along exactly in step, with the stream of "actual moments" in the outside world and the stream of conscious awareness of them perfectly synchronized. The cinema industry depends on the phenomenon that what seems to us a movie is really a succession of still pictures, running at twenty-five [sic] frames per second. We don't notice the joins. Evidently the "now" of our conscious awareness stretches over at least 1/25 of a second.In fact, psychologists are convinced it can last a lot longer than that. Take he familiar "tick-tock" of the clock. Well, the clock doesn't go "tick-tock" at all; it goes "tick-tick," every tick producing the same sound. It's just that our consciousness runs two successive ticks into a singe "tick-tock" experience—but only if the duration between ticks is less than about three seconds. A really bug pendulum clock just goes "tock . . . tock . . . tock," whereas a bedside clock chatters away: "ticktockticktock..." Two to three seconds seems to be the duration over which our minds integrate sense data into a unitary experience, a fact reflected in the structure of human music and poetry.” - Paul Davies

76. “We all love a good story. We all love a tantalizing mystery. We all love the underdog pressing onward against seemingly insurmountable odds. We all, in one form or another, are trying to make sense of the world around us. And all of these elements lie at the core of modern physics. The story is among the grandest -- the unfolding of the entire universe; the mystery is among the toughest -- finding out how the cosmos came to be; the odds are among the most daunting -- bipeds, newly arrived by cosmic time scales trying to reveal the secrets of the ages; and the quest is among the deepest -- the search for fundamental laws to explain all we see and beyond, from the tiniest particles to the most distant galaxies.” - Brian Greene

77. “Despite my resistance to hyperbole, the LHC belongs to a world that can only be described with superlatives. It is not merely large: the LHC is the biggest machine ever built. It is not merely cold: the 1.9 kelvin (1.9 degrees Celsius above absolute zero) temperature necessary for the LHC’s supercomputing magnets to operate is the coldest extended region that we know of in the universe—even colder than outer space. The magnetic field is not merely big: the superconducting dipole magnets generating a magnetic field more than 100,000 times stronger than the Earth’s are the strongest magnets in industrial production ever made.And the extremes don’t end there. The vacuum inside the proton-containing tubes, a 10 trillionth of an atmosphere, is the most complete vacuum over the largest region ever produced. The energy of the collisions are the highest ever generated on Earth, allowing us to study the interactions that occurred in the early universe the furthest back in time.” - Lisa Randall

78. “At best he read popular science magazines like the Scientific American he had now, to keep himself up-to-date, in layman's terms, with physics generally. But even then his concentration was marred, for a lifetime's habit made him inconveniently watchful for his own name. He saw it as if in bold. It could leap out at him from an unread double page of small print, and sometimes he could sense it coming before the page turn.” - Ian McEwan

79. “Physicists have come to realize that mathematics, when used with sufficient care, is a proven pathway to truth.” - Brian Greene

80. “Energy is liberated matter, matter is energy waiting to happen.” - Bill Bryson

81. “One of the various theories proposed to explain the negative result of the famous Michelson-Morley experiment with light waves (conceived to measure the absolute space), was based on the ballistic hypothesis, i.e. on postulating that the speed of light predicted by Maxwell's equations was not given as relative to the medium but as relative to the transmitter (firearm). Had that been the case, the experiment negative results would have not caused such perplexity and frustration (as we shall see in forthcoming sections).” - Felix Alba-Juez

82. “There is no problem more difficult to solve than that created by ourselves.” - Felix Alba-Juez

83. “It is worth noting that a wrong folkoric definition of an Inertial Frame in the Popular Science literature (even in text books) reads that 'it is a frame in uniform motion'. We know very well by now that the idea of motion requires a frame of reference, so that such a definition of an Inertial Frame has no meaning whatsoever, confusing the reader because it tacitly reaffirms the idea of absolute motion -- when the goal of every didactic exposition of Relativity Theory should be precisely the opposite.” - Felix Alba-Juez

84. “Here at great expense,' [Colonel Groves] moaned to Oppenheimer, 'the government has assembled the world's largest collection of crackpots.” - Steve Sheinkin

85. “Thus, by science I mean, first of all, a worldview giving primacy to reason and observation and a methodology aimed at acquiring accurate knowledge of the natural and social world. This methodology is characterized, above all else, by the critical spirit: namely, the commitment to the incessant testing of assertions through observations and/or experiments — the more stringent the tests, the better — and to revising or discarding those theories that fail the test. One corollary of the critical spirit is fallibilism: namely, the understanding that all our empirical knowledge is tentative, incomplete and open to revision in the light of new evidence or cogent new arguments (though, of course, the most well-established aspects of scientific knowledge are unlikely to be discarded entirely).. . . I stress that my use of the term 'science' is not limited to the natural sciences, but includes investigations aimed at acquiring accurate knowledge of factual matters relating to any aspect of the world by using rational empirical methods analogous to those employed in the natural sciences. (Please note the limitation to questions of fact. I intentionally exclude from my purview questions of ethics, aesthetics, ultimate purpose, and so forth.) Thus, 'science' (as I use the term) is routinely practiced not only by physicists, chemists and biologists, but also by historians, detectives, plumbers and indeed all human beings in (some aspects of) our daily lives. (Of course, the fact that we all practice science from time to time does not mean that we all practice it equally well, or that we practice it equally well in all areas of our lives.)” - Alan Sokal

86. “Today will still yearn to know why we are here and where we came from. Humanity's deepest desire for knowledge is justification enough for our continuing quest. And our goal is nothing less than a complete description of the universe we live in.” - Stephen Hawking

87. “I like physics, but I love cartoons.” - Stephen Hawking

88. “In the beginning, there was physics. "Physics" describes how matter, energy, space, and time behave and interact with one another. The interplay of these characters in our cosmic drama underlies all biological and chemical phenomena. Hence everything fundamental and familiar to us earthlings begins with, and rests upon, the laws of physics. When we apply these laws to astronomical settings, we deal with physics writ large, which we call astrophysics.” - Neil deGrasse Tyson

89. “We must realize that growth is but an adolescent phase of life which stops when physical maturity is reached. If growth continues in the period of maturity it is called obesity or cancer. Prescribing growth as the cure for the energy crisis has all the logic of prescribing increasing quantities of food as a remedy for obesity.” - Albert A. Bartlett

90. “His laws changed all of physics and astronomy. His laws made it possible to calculate the mass of the sun and planets. The way it's done is immensely beautiful. If you know the orbital period of any planet, say, Jupiter or the Earth and you know its distance to the Sun; you can calculate the mass of the Sun. Doesn't this sound like magic?We can carry this one step further - if you know the orbital period of one of Jupiter's bright moons, discovered by Galileo in 1609, and you know the distance between Jupiter and that moon, you can calculate the mass of Jupiter. Therefore, if you know the orbital period of the moon around the Earth (it's 27.32 days), and you know the mean distance between the Earth and the moon (it's about 200,039 miles), then you can calculate to a high degree of accuracy the mass of the Earth. … But Newton's laws reach far beyond our solar system. They dictate and explain the motion of stars, binary stars, star clusters, galaxies and even clusters of galaxies. And Newton's laws deserve credit for the 20th century discovery of what we call dark matter. His laws are beautiful. Breathtakingly simple and incredibly powerful at the same time. They explain so much and the range of phenomena they clarify is mind boggling. By bringing together the physics of motion, of interaction between objects and of planetary movements, Newton brought a new kind of order to astronomical measurements, showing how, what had been a jumble of confused observations made through the centuries were all interconnected.” - Walter Lewin

91. “Yet if there really were a complete unified theory, it would also presumably determine our actions—so the theory itself would determine the outcome of our search for it! And why should it determine that we come to the right conclusions from the evidence? Might it not equally well determine that we draw the wrong conclusion? Or no conclusion at all?” - Stephen Hawking

92. “In some sense, gravity does not exist; what moves the planets and the stars is the distortion of space and time.” - Michio Kaku

93. “For the moment we might very well can them DUNNOS (for Dark Unknown Nonreflective Nondetectable Objects Somewhere).” - Bill Bryson

94. “He who thinks half-heartedly will not believe in God; but he who really thinks has to believe in God.” - Isaac Newton

95. “Nature has a great simplicity and therefore a great beauty” - Richard Feynman

96. “Unlike what you may be told in other sectors of life, when observing the universe, size does matter, which often leads to polite ‘telescope envy’ at gatherings of amateur astronomers.” - Neil deGrasse Tyson

97. “Any account of science which does not explicitly describe it as something we believe in is essentially incomplete and a false pretense. It amounts to a claim that science is essentially different from and superior to all human beliefs that are not scientific statements--and this is untrue.” - Richard Rhodes

98. “There was a young lady named Bright,Whose speed was far faster than light;She started one dayIn a relative way,And returned on the previous night.” - Arthur Henry Reginald Buller

99. “Radar is too long in the tooth for fine detail.” - Peter Watts

100. “The laws of physics is the canvas God laid down on which to paint his masterpiece” - Dan Brown

101. “(On the energy radiated by the Sun)It's four hundred million million million million watts. That is a million times the power consumption of the United States every year, radiated in one second, and we worked that out by using some water, a thermometer, a tin, and an umbrella. And that's why I love physics.” - Brian Cox

102. “CURIOSITY DEMANDS THAT WE ASK QUESTIONS,THAT WE TRY TO PUT THINGS TOGETHER AND TRY TO UNDERSTAND THIS MULTITUDE OF ASPECTSAS PERHAPS RESULTING FROM THE ACTION OF A RELATIVELY SMALL NUMBER OF ELEMENTALTHINGS AND FORCES ACTING IN AN INFINITE VARIETY OF COMBINATIONS” - Richard P. Feynman

103. “THE QUESTION IS, OF COURSE, IS IT GOING TO BE POSSIBLE TO AMALGAMATE EVERYTHING,AND MERELY DISCOVER THAT THIS WORLD REPRESENTS DIFFERENT ASPECTS OF ONE THING?” - Richard P. Feynman

104. “Light is the only connection we have with the Universe beyond our solar system, and the only connection our ancestors had with anything beyond Earth. Follow the light and we can journey from the confines of our planet to other worlds that orbit the Sun without ever dreaming of spacecraft. To look up is to look back in time, because the ancient beams of light are messengers from the Universe's distant past.” - Brian Cox