Theory Quotes
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Economists can never be free of from difficulties unless they will distinguish between a theory and the application of a theory.
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One theory says that if you treat people well, you're more likely to encourage them to do what you want, making all the effort pay off. Do this, get that. Another one, which I prefer, is that you might consider treating people with kindness merely because you can. Regardless of what they choose to do in response, this is what you choose to do. Because you can.
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Evolution as such is no longer a theory for a modern author. It is as much a fact as that the earth revolves around the sun.
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The indispensability argument says (roughly) that if you have ample reason to accept an empirical scientific theory that makes indispensable use of mathematics, and that theory entails that numbers exist, then you have ample reason to accept that numbers exist. The argument affirms the antecedent of this conditional, and concludes that you have ample reason to believe that numbers exist. What is striking about this argument is that it seems to show that the empirical reasons that suffice for accepting a scientific theory also suffice for accepting a metaphysical claim.
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Had I not played the Sicilian with Black I could have saved myself the trouble of studying for more than 20 years all the more popular lines of this opening, which comprise probably more than 25 percent of all published opening theory!
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More philosophically-minded critics regarded Einstein's argument for relativity as little more than a logical bait-and-switch ploy: "The supposition of most expounders of the Special Theory, that Einstein has proved the relativity of simultaneity in general - or that his 'simultaneity' is something more than a logical artefact - must manifestly be given up.
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I don't think Obama understands basic economics. Not economics that work. He may understand some theory that someone in Princeton sat and dreamed up, but it's not working.
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E pur si muove. "Albeit It does move". (That's what Galileo purportedly muttered after torturers forced him to recant his theory that the earth orbits the sun.)
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Partial knowledge is more triumphant than complete knowledge; it takes things to be simpler than they are, and so makes its theory more popular and convincing.
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It must be conceded that a theory has an important advantage if its basic concepts and fundamental hypotheses are 'close to experience,' and greater confidence in such a theory is certainly justified. There is less danger of going completely astray, particularly since it takes so much less time and effort to disprove such theories by experience. Yet more and more, as the depth of our knowledge increases, we must give up this advantage in our quest for logical simplicity in the foundations of physical theory.
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Theory must mediate between all previous truths and certain new experiences
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Qualities I sought in a scientific theory were naturalness, inner perfection and logical simplicity from an aesthetic approach.
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There is a mask of theory over the whole face of nature.
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Every theory in medicine, if medicine is to remain healthy, must be beaten out on the anvil of skepticism. So do we weed out charlatanism.
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Poincaré was a vigorous opponent of the theory that all mathematics can be rewritten in terms of the most elementary notions of classical logic; something more than logic, he believed, makes mathematics what it is.
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Nothing is known in our profession by guess; and I do not believe, that from the first dawn of medical science to the present moment, a single correct idea has ever emanated from conjecture: it is right therefore, that those who are studying their profession should be aware that there is no short road to knowledge; and that observation on the diseased living, examination of the dead, and experiments upon living animals, are the only sources of true knowledge; and that inductions from these are the sole bases of legitimate theory.
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A new theory is guilty until proven innocent, and the pre-existing theory innocent until proven guilty ... Continental drift was guilty until proven innocent.
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My theory is that all of Scottish cuisine is based on a dare.
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Criticism - however valid or intellectually engaging - tends to get in the way of a writer who has anything personal to say. A tightrope walker may require practice, but if he starts a theory of equilibrium he will lose grace (and probably fall off).
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A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.
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Carl Schmitt in theory is one thing; confined to a few conservatives on the right and a somewhat greater number of envious postmodernists on the left, Schmitt’s ideas have not reached the informed reading public. Schmitt’s books are destined to be confined to the political theory sem inar room for some time to come.
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Ahimsa in theory no one knows. It is as indefinable as God.
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The theory that music has a depraving effect on morals has now been abandoned to the old women of both sexes.
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My theory has always been, if you take care of your business today, take care of the job you have at hand, whatever else comes down the road will be there for you.
