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Theories without facts may be barren, but facts without theories are meaningless.
--
Attributed to Boulding in: Association of American Colleges (1955) Liberal education. Vol. 41, p.430

 

Kenneth Boulding

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Well, evolution is a theory. It is also a fact. And facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are structures of ideas that explain and interpret facts. Facts do not go away while scientists debate rival theories for explaining them. Einstein's theory of gravitation replaced Newton's, but apples did not suspend themselves in mid-air pending the outcome. And human beings evolved from apelike ancestors whether they did so by Darwin's proposed mechanism or by some other, yet to be discovered. [...] Evolutionists make no claim for perpetual truth, though creationists often do (and then attack us for a style of argument that they themselves favor). In science, “fact” can only mean “confirmed to such a degree that it would be perverse to withhold provisional assent.” I suppose that apples might start to rise tomorrow, but the possibility does not merit equal time in physics classrooms.

 

Stephen Jay Gould

 

Facts are constituted by older ideologies, and a clash between facts and theories may be proof of progress.

 

Paul Karl Feyerabend

 

Prentice: It's a fascinating theory, sir, and cleverly put together. Does it tie in with known facts?
Rance: That need not cause us undue anxiety. Civilizations have been founded and maintained on theories which refused to obey facts.

 

Joe Orton

 

I have nothing but myself to write about, no facts, no theories, no opinions, no adventures, no sentiments, nothing but my own poor barren individualism, of considerable interest to me, but I do not know why I should presume it will be so to you. Egotism is not tiresome, or it ought not to be, if one is sincere about oneself; but it is so hard to be sincere. Well, never mind, I mean to be, and you know me well enough to see through me when I am humbugging.

 

James Anthony Froude

 

Scientific theories need reconstruction every now and then. If they didn't need reconstruction they would be facts, not theories.

 

Charles Proteus Steinmetz