“It from bit symbolizes the idea that every item of the physical world has at bottom — at a very deep bottom, in most instances — an immaterial source and explanation; that which we call reality arises in the last analysis from the posing of yes-no questions and the resistering of equipment-evoked responses; in short, that all things physical are information-theoretic in origin and that this is a participatory universe.”

— John Archibald Wheeler

"Information, Physics, Quantum: The Search for Links" in Complexity, Entropy and the Physics of Information (1990) ed., Wojciech H. Zurek, p. 5. http://books.google.com/books?id=mdjsOeTgatsC&lpg=PP1&pg=PA5

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John Archibald Wheeler 16

American physicist 1911–2008

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“Ethics increases the range of what it is about ourselves that we can will—extending it from our actions to the motives and character traits and dispositions from which they arise. We want to be able to will the sources of our actions down to the very bottom.”

Thomas Nagel (1937) American philosopher

Source: The View From Nowhere (1986), p. 135.

“The first question we should face is: What is the aim of a physical theory? To this question diverse answers have been made, but all of them may be reduced to two main principles:
"A physical theory," certain logicians have replied, "has for its object the explanation of a group of laws experimentally established."
"A physical theory," other thinkers have said, "is an abstract system whose aim is to summarize and classify logically a group of experimental laws without claiming to explain these laws…
Now these two questions — Does there exist a material reality distinct from sensible appearances? and What is the nature of reality? — do not have their source in experimental method, which is acquainted only with sensible appearances and can discover nothing beyond them. The resolution of these questions transcends the methods used by physics; it is the object of metaphysics.
Therefore, if the aim of physical theories is to explain experimental laws, theoretical physics is not an autonomous science; it is subordinate to metaphysics…
Now, to make physical theories depend on metaphysics is surely not the way to let them enjoy the privilege of universal consent.”

Pierre Duhem (1861–1916) French physicist, historian of science

Notice sur les Titres et Travaux scientifiques de Pierre Duhem rédigée par lui-même lors de sa candidature à l'Académie des sciences (mai 1913), The Aim and Structure of Physical Theory (1906)

“The notion that we can transfer our guilt and sufferings to some other being who will bear them for us is familiar to the savage mind. It arises from a very obvious confusion between the physical and the mental, between the material and the immaterial.”

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Source: The Golden Bough (1890), Chapter 55, The Transference of Evil.

“Physical things are perceptual things. They also arise within the act… It is in the operation with these perceptual or physical things which lie within the physiological act short of consummation that the peculiar human intelligence is found.”

George Herbert Mead (1863–1931) American philosopher, sociologist, and psychologist

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“The last century was defined by physics. From the minds of the world’s leading physicists there flowed a river of ideas that would transport man kind to the very pinnacle of wonder and to the very depths of despair. This was a century that began with the certainties of absolute knowledge and ended with the knowledge of absolute uncertainty. It was a century in which physicists developed theories that would deny us the possibility that we can ever properly comprehend the nature of physical reality. It was also a century in which they built weapons with the capacity utterly to destroy this reality.”

Jim Baggott (1957) British writer

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“[A]ll our symbols have the same purpose; words are merely the symbols we use most commonly. The function of words in human thought is to stand for things which are not present to the senses, and allow the mind to manipulate them—things, concepts, ideas, everything that does not have a physical reality in front of us now.”

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“The inmost spirit of poetry, in other words, is at bottom, in every recorded case, the voice of pain – and the physical body, so to speak, of poetry, is the treatment by which the poet tries to reconcile that pain with the world.”

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“The great scientific contribution in theoretical physics that has come from Japan since the last war may be an indication of a certain relationship between philosophical ideas in the tradition of the Far East and the philosophical substance of quantum theory.”

Werner Heisenberg (1901–1976) German theoretical physicist

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“(…) the bottom line is that if you believe in an external reality independent of humans, then you must also believe that our physical reality is a mathematical structure. Nothing else has a baggage-free description. In other words, we all live in a gigantic mathematical object—one that’s more elaborate than a dodecahedron, and probably also more complex than objects with intimidating names such as Calabi-Yau manifolds, tensor bundles and Hilbert spaces, which appear in today’s most advanced physics theories. Everything in our world is purely mathematical—including you.”

Max Tegmark book Our Mathematical Universe

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“The proximate goal of all perception is what we can get our hands upon. If we traverse the distance that separate us from that which we see or hear and find nothing for the hand to manipulate, the experience is an illusion or a hallucination. The world of perceptual reality, the world of physical things, is the world of our contacts and our manipulations, and the distance experience of the eye and the ear means first of all these physical things. Physical things are not only the meaning of what we see and hear; they are also the means we employ to accomplish our ends.”

George Herbert Mead (1863–1931) American philosopher, sociologist, and psychologist

George Herbert Mead (1926). "The Nature of Aesthetic Experience." International Journal of Ethics, Vol. 36, No. 4 (Jul., 1926), pp. 382-393; p. 382

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