Quantum Quotes

322 Sourced quotes

Is the very mechanism for the universe to come into being meaningless or unworkable or both unless the universe is guaranteed to produce life, consciousness and observership somewhere and for some little time in its history-to-be? The quantum principle shows that there is a sense in which what the observer will do in the future defines what happens in the past—even in a past so remote that life did not then exist, and shows even more, that 'observership' is a prerequisite for any useful version of 'reality'.

John Archibald Wheeler

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.

We are thankful for good-will rather than for services, for the motive than the quantum of favor received.

William Hazlitt

Quantum brings a hand in fiction that challenges all conventional fixtures of control within the psyche of art.

The Quantum Universe has a quotation from me in every chapter — but it's a damn good book anyway.

Richard Feynman

Trying to capture the physicists' precise mathematical description of the quantum world with our crude words and mental images is like playing Chopin with a boxing glove on one hand and a catcher's mitt on the other.

George Johnson (writer)

Quantum theory can be described as a new kind of language to be used in a dialogue between us and the systems we study with our instruments.... It tells us nothing about what the world would be like in our absence.

Planck, Einstein, Bohr, Heisenberg, Schrodinger, Born, Pauli, De Broglie, Dirac, the leading lights of the quantum revolution, are all there in that picture.

I really enjoy good murder mystery writers, usually women, frequently English, because they have a sense of what the human soul is about and why people do dark and terrible things. I also read quite a lot in the area of particle physics and quantum mechanics, because this is theology. This is about the nature of being. This is what life is all about. I try to read as widely as I possibly can.

Madeleine L'Engle

If a little kid ever asks you just why the sky is blue, you look him or her right in the eye and say, "It's because of quantum effects involving Rayleigh scattering combined with a lack of violet photon receptors in our retinae."

If people have personal conversations about very emotional matters in public, and people reveal parts of their body that were originally kept covered, and pornography is becoming semi-respectable, it makes you think the push for greater freedom and divesting yourself of inhibitions is a real human need. I'm 54, so I'm further back upon the road. We certainly did a fair amount of divesting ourselves of inhibitions, but there seems to have been a quantum leap in the last half a generation. Maybe we're destined to be freer, but it's taking odd forms, like showing your big gut to all the world and discussing the future of your marriage at a bus stop with 30 people listening in.

Science, it is usually believed, helps us to build a picture of objective reality – the world 'out there'. With the advent of the quantum theory, that very reality appears to have crumbled, to be replaced by something so revolutionary and bizarre that its consequences have not yet been properly faced.

Having presented all the relevant nanoscale mechanisms, thus laying down a firm background for the readers' understanding, the author moves to the topic of architectural challenges in Chapter 7. This field is claimed still to be an unsolved problem so the author gives examples of currently used technologies and points out potential architectural solutions such as self-assembly, carbon nanotubes, or quantum systems. That is why it makes the book even more valuable for those who intend to involve nanonetworks in their research.

Can quantum mechanics represent the fact that an electron finds itself approximately in a given place and that it moves approximately with a given velocity, and can we make these approximations so close that they do not cause experimental difficulties?

Werner Heisenberg

Just by studying mathematics we can hope to make a guess at the kind of mathematics that will come into the physics of the future. A good many people are working on the mathematical basis of quantum theory, trying to understand the theory better and to make it more powerful and more beautiful. If someone can hit on the right lines along which to make this development, it may lead to a future advance in which people will first discover the equations and then, after examining them, gradually learn how to apply them.

There are circumstances of peculiar difficulty and danger, where a mediocrity of talent is the most fatal quantum that a man can possibly possess. Had Charles the First and Louis the Sixteenth been more wise or more weak, more firm or more yielding, in either case they had both of them saved their heads.

Charles Caleb Colton

If we want to make relatively minor changes in our lives, we can perhaps appropriately focus on our attitudes and behaviors. But if we want to make significant, quantum change, we need to work on our basic paradigms.

However the development proceeds in detail, the path so far traced by the quantum theory indicates that an understanding of those still unclarified features of atomic physics can only be acquired by foregoing visualization and objectification to an extent greater than that customary hitherto. We have probably no reason to regret this, because the thought of the great epistemological difficulties with which the visual atom concept of earlier physics had to contend gives us the hope that the abstracter atomic physics developing at present will one day fit more harmoniously into the great edifice of Science.

Werner Heisenberg

I am an old man now, and when I die and go to Heaven there are two matters on which I hope for enlightenment. One is quantum electrodynamics and the other is the turbulent motion of fluids. And about the former I am rather more optimistic.

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

I have a more fractal way of working, if you like, it is more like the way most people's minds actually work. They don't work in any linear way. When your mind wanders if you ever pay attention to some of the paths it takes, you generally find it's these paths of association that can link all over the place. …The movements of the mind don't follow any linear pattern, they can't be explained with a mechanistic, clockwork view. You could find quantum models of how the mind works that might fit.

Continual miniaturisation allows resources to be conserved, efficiency to be increased, pollution to be reduced, and the remarkable flexibilities of the quantum world to be tapped. Very advanced civilizations elsewhere in the universe may have been force to follow the same technological path. Their nano-scale space probes, their atomic-scale machines and nano-computers, would be imperceptible to our course-grained surveys of the universe.... This may be the low-impact evolutionary path you need to follow in order to survive into the far, far future.

Anyone who is not shocked by the quantum theory has not understood it.

Bertrand Russell had given a talk on the then new quantum mechanics, of whose wonders he was most appreciative. He spoke hard and earnestly in the New Lecture Hall. And when he was done, Professor Whitehead, who presided, thanked him for his efforts, and not least for 'leaving the vast darkness of the subject unobscured'.

J. Robert Oppenheimer

If I were to propose to you that my arm could be in this position or in that position but it would be forbidden by the laws of nature to be in some intermediate position, that would likely strike you as absurd, as contrary to experience. And yet on the subatomic level, there is a quantization of energy and position and momentum. The reason that it seems counterintuitive is that is that we are not ordinarily down at the level of the very small, where quantum effects dominate.