Theory
A doctrine, or scheme of things, which terminates in speculation or contemplation, without a view to practice; hypothesis; speculation.
An exposition of the general or abstract principles of any science; as, the theory of music.
The science, as distinguished from the art; as, the theory and practice of medicine.
The philosophical explanation of phenomena, either physical or moral; as, Lavoisier's theory of combustion; Adam Smith's theory of moral sentiments.
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Theory Quotations
If the facts don't fit the theory, change the facts.
Albert Einstein
I have just got a new theory of eternity.
Albert Einstein
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.
Albert Einstein
My theory has always been, that if we are to dream, the flatteries of hope are as cheap, and pleasanter, than the gloom of despair.
Thomas Jefferson
The moment a person forms a theory, his imagination sees in every object only the traits which favor that theory.
Thomas Jefferson
An ounce of action is worth a ton of theory.
Ralph Waldo Emerson
I have a theory that the truth is never told during the nine-to-five hours.
Hunter S. Thompson
The things that will destroy America are prosperity-at-any-price, peace-at-any-price, safety-first instead of duty-first, the love of soft living, and the get-rich-quick theory of life.
Theodore Roosevelt
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.
Leonardo da Vinci
In order to govern, the question is not to follow out a more or less valid theory but to build with whatever materials are at hand. The inevitable must be accepted and turned to advantage.
Napoleon Bonaparte
In theory there is no difference between theory and practice. In practice there is.
Yogi Berra
The theory of Communism may be summed up in one sentence: Abolish all private property.
Karl Marx
My theory of evolution is that Darwin was adopted.
Steven Wright
All theory, dear friend, is gray, but the golden tree of life springs ever green.
Johann Wolfgang von Goethe
We must respect the other fellow's religion, but only in the sense and to the extent that we respect his theory that his wife is beautiful and his children smart.
H. L. Mencken
Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?
Stephen Hawking
If we do discover a complete theory, it should be in time understandable in broad principle by everyone. Then we shall all, philosophers, scientists, and just ordinary people be able to take part in the discussion of why we and the universe exist.
Stephen Hawking
I have a theory about the human mind. A brain is a lot like a computer. It will only take so many facts, and then it will go on overload and blow up.
Erma Bombeck
The world runs on individuals pursuing their self interests. The great achievements of civilization have not come from government bureaus. Einstein didn't construct his theory under order from a, from a bureaucrat. Henry Ford didn't revolutionize the automobile industry that way.
Milton Friedman
My theory on housework is, if the item doesn't multiply, smell, catch fire, or block the refrigerator door, let it be. No one else cares. Why should you?
Erma Bombeck
There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable.There is another theory which states that this has already happened.
Douglas Adams
Well, in The Chosen, Danny Saunders, from the heart of his religious reading of the world, encounters an element in the very heart of the secular readings of the world - Freudian psychoanalytic theory.
Chaim Potok
Democracy is the theory that the common people know what they want, and deserve to get it good and hard.
H. L. Mencken
What we should be teaching are the problems and holes and I think there are legitimate problems and holes in the theory of evolution. And what we need to do is to present those fairly from a scientific point of view. And we should lay out areas in which the evidence supports evolution and the areas in the evidence that does not.
Rick Santorum
Europe is so well gardened that it resembles a work of art, a scientific theory, a neat metaphysical system. Man has re-created Europe in his own image.
Aldous Huxley
Without revolutionary theory there can be no revolutionary movement.
Vladimir Lenin
Without a revolutionary theory there cannot be a revolutionary movement.
Vladimir Lenin
Experience without theory is blind, but theory without experience is mere intellectual play.
Immanuel Kant
Never worry about theory as long as the machinery does what it's supposed to do.
Robert A. Heinlein
A universe with a God would look quite different from a universe without one. A physics, a biology where there is a God is bound to look different. So the most basic claims of religion are scientific. Religion is a scientific theory.
Richard Dawkins
More Theory Quotations
Theory Translations
theory in Dutch is theorie
Theory in German is Theorie
theory in Italian is gamma
theory in Portuguese is teoria
theory in Swedish is teori
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