“Quantum field theory is the basic tool to understand the physics of the elementary constituents of matter. … It is both a very powerful and a very precise framework: using it we can describe physical processes in a range of energies going from the few millions electrovolts typical of nuclear physics to the thousands of billions of the Large Hadron Collider (LHC). And all this with astonishing precision.”

Source: An Invitation to Quantum Field Theory (2012), Ch. 1 : Why Do We Need Quantum Field Theory After All?

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Luis Álvarez-Gaumé4

Spanish physicist

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“The Large Hadron Collider (LHC) is a discovery machine. We are actually looking to make discoveries. So, I think that’s the name of the game. As the data come in, the emphasis will be on the high statistical significance of the statements that we make at the end of the programme – we are half way through the LHC programme today and so [there is] another 10-15 years to go. The name of the game is actually to retrieve all the physics that is at this special energy scale of the LHC. There is some magic, I think, about this energy scale.”

Tejinder Virdee (1952) British physicist

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“The exact description of any physical process must include the effects of quantum gravity. But our experience suggests that there is a separation of scales, so that under suitable conditions we get 'lab physics'; i.e., physics described to good accuracy by quantum fields on gently curved spacetime.”

Samir D. Mathur Indian physicist

[What the information paradox is not., arXiv preprint arXiv:1108.0302, 2011, https://arxiv.org/abs/1108.0302]

“The development of quantum mechanics in the 1920s was the greatest advance in physical science since the work of Isaac Newton. It was not easy; the ideas of quantum mechanics present a profound departure from ordinary human intuition. Quantum mechanics has won acceptance through its success. It is essential to modern atomic, molecular, nuclear, and elementary particle physics, and to a great deal of chemistry and condensed matter physics as well.”

Steven Weinberg (1933) American theoretical physicist

Preface
Lectures on Quantum Mechanics (2012, 2nd ed. 2015)

“There are very few things that can be proved rigorously in condensed matter physics.”

Anthony James Leggett (1938) British physicist

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“In physics, energy has a very precise definition: it is what characterises something changing in the world surrounding us. [...] Counting energy is therefore nothing else than counting how much the world has changed.”

Jean-Marc Jancovici (1962) French engineer and energy climate specialist

Source: "Energy: basic facts for an informed debate" https://www.youtube.com/watch?v=lRAMA4mT0z0, 2012.

“Because physical theories typically predict numerical values, an improvement in experimental precision reduces the tolerance range and hence increases corroborability. In most psychological research, improved power of a statistical design leads to a prior probability approaching ½ of finding a significant difference in the theoretically predicted direction. Hence the corroboration yielded by "success" is very weak, and becomes weaker with increased precision. "Statistical significance" plays a logical role in psychology precisely the reverse of its role in physics. This problem is worsened by certain unhealthy tendencies prevalent among psychologists, such as a premium placed on experimental "cuteness" and a free reliance upon ad hoc explanations to avoid refutation.”

Paul E. Meehl (1920–2003) American psychologist

Source: [Theory-testing in psychology and physics: A methodological paradox, Philosophy of Science, 34, 2, 1967, 103–115, https://www.journals.uchicago.edu/doi/abs/10.1086/288135]

“Physics is by no means "finished". But the part of it that explains almost everything in the universe—including us—is finished, and much of it has been finished for a century or more. This includes the physics that we are going to need. Nothing at the unsettled frontiers of physics challenges the parts we're going to make use of. What's more, the physics we need is easy to understand, certainly far easier than quantum mechanics, general relativity, or string theory.”

Alexander Rosenberg (1946) American philosopher

The Atheist's Guide to Reality (2011)

“Considering the pervasive importance of quantum mechanics in modern physics, it is odd how rarely one hears of efforts to test quantum mechanics experimentally with high precision.…The trouble is that it is very difficult to find any logically consistent generalization of quantum mechanics. One obvious target for generalization is the linearity of quantum mechanics, but if we arbitrarily add nonlinear terms to the Schrodinger equation, how do we know that the theory we obtain will have a sensible physical interpretation? At least in part, it is the dearth of generalized versions of quantum mechanics that has made it so hard to plan experimental tests of quantum mechanics.”

Steven Weinberg (1933) American theoretical physicist

"Testing Quantum Mechanics" http://www.sciencedirect.com/science/article/pii/0003491689902765, Annals of Physics (1989)

“We have to realize that a unified theory of the physical world simply does not exist. We have theories that work in restricted regions, we have purely formal attempts to condense them into a single formula, we have lots of unfounded claims (such as the claim that all of chemistry can be reduced to physics), phenomena that do not fit into the accepted framework are suppressed; in physics, which many scientists regard as the one really basic science, we have now at least three different point of view (relativity, dealing with the very large, quantum theory for an intermediate domain and various particle models for the very small) without a promise of conceptual (and not only formal) unification; perceptions are outside of the material universe (the mind-body problem is still unsolved) - from the very beginning the salesman of a universal truth cheated people into admissions instead of clearly arguing for their philosophy. And let us not forget that it was they and not the representatives of the traditions they attacked who introduced argument as the one and only universal arbiter. They praised argument - they constantly violated its principles.”

Paul Karl Feyerabend book Farewell to Reason

pg 100
Farewell to Reason (1987)

“On the side of physics, there were a few key figures in Oxford who realized, in all probability unlike the majority of their colleagues in the physics department, that physics without interpretation is only part of the story, and that theories like quantum mechanics need careful foundational reflection.”

Harvey Brown (philosopher) (1950) Philosopher of physics

Physics and Philiosophy in Oxford: a prosperous example of interdisciplinarity, in [Innovation and interdisciplinarity in the university, EDIPUCRS, 2007, 8-574-30677-0, 304 http://books.google.com/books?id=-OGr007TQ0AC&printsec=frontcover#PPA304,M1]

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Luis Álvarez-Gaumé4

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