Well, gauge theory is very fundamental to our understanding of physical forces these days. But they are also dependent on a mathematical idea, which has been around for longer than gauge theory has.
quote by Roger Penrose

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There could be no fairer destiny for any physical theory than that it should point the way to a more comprehensive theory in which it lives on as a limiting case.
quote by Albert Einstein

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And it really began with Einstein. We attended his lectures. Now the theory of relativity remained - and still remains - only a theory. It has not been proven. But it suggested a completely different picture of the physical world.
quote by Douglas Sirk

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I believe without exception that theory follows practice. Whenever there is a conflict between theory and practice, theory is wrong. As far as I'm concerned, we make theories for what people have done.
quote by David Baker

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

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A theory is only as good as its assumptions. If the premises are false, the theory has no real scientific value. The only scientific criterion for judging the validity of a scientific theory is a confrontation with the data of experience.
quote by Maurice Allais

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Statistics: the mathematical theory of ignorance.
quote by Morris Kline

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As for everything else, so for a mathematical theory: beauty can be perceived but not explained.
quote by Arthur Cayley

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As for everything else, so for mathematical theory: beauty can be perceived but not explained.
quote by Arthur Cayley

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Then Fly Away
They fly away on thinking doubts,
With celebrations that relish the relics
They have worshipped, that their sound can concoct.
Days come by the edge of a river,
As if startled were the animals when too late
To run from the moon’s spirit
That awakens by night, always by night.
It is now silence. The water mutters all the pulses of washing,
coming from the water’s gauge,
He lives with the instruments and the gauge
To live with him, and doubts do shape his skull
When the water is not dirty and when dirty he admits
What the river wanted.
The flies are around.
The river is never around.
poem by Naveed Akram

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I'm not sure what theory is, unless it's the pursuit of fundamental questions.
quote by David Antin

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A mathematical theory is not to be considered complete until you have made it so clear that you can explain it to the first man whom you meet on the street.
quote by David Hilbert

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The theory of evolution is outstandingly the most important theory in biology.
quote by Mark Ridley, 1983

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The basic theory in twistor theory is not to add extra dimensions.
quote by Roger Penrose

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Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve.
quote by Karl Popper

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Today the theory of evolution is about as much open to doubt as the theory that the earth goes round the sun.
quote by Richard Dawkins

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I had become interested in economics, an interest that was transformed into a lifetime dedication when I met with the mathematical theory of general economic equilibrium.
quote by Gerard Debreu

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Don't confuse hypothesis and theory. The former is a possible explanation; the latter, the correct one. The establishment of theory is the very purpose of science.
quote by Martin H. Fischer

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In the book, I make the point that here we have string theory and here we have twistor theory and we don't know if either one of them is the right approach to nature.
quote by Roger Penrose

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To an intellectual who is adrift in politics, a theory is an aim; to a true politician his theory is a boundary.
quote by Francis Parker Yockey

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They didn't accept me theory - not a theory, but just a thought I had about this character. I noticed that this man only exists when the boy comes into the grocery.
quote by Omar Sharif

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