Best 629 quotes in «theory quotes» category

The knowledge of the theory of logic has no tendency whatever to make men good reasoners.

The legal theory is, that marriage makes the husband and wife one person, and that person is the husband.

The living would come up with endless theories to argue, because the living were exceptionally good at arguing, especially when no one knew the answer.

The loveliest theories are being overthrown by these damned experiments; it's no fun being a chemist anymore.

The major motivation theories by which most men live can lead them only to depression and cynicism.

The masses will reject any theory, however reasonable it may be, if it lays a restriction upon the appetite.

The more we learn about life, the less plausible is any evolutionary theory that relies on blind, undirected, piece-by-piece change.

The most probable assumption is that no currently working 'business theory' will be valid 10 years hence.

The most practical solution is a good theory.

Theories can be based on any assumptions, however bizarre.

Theories pass. The frog remains.

Theories are just fantasies. And they change.

Theories are like patches on a coat, one day they just wear off.

Theories of art carry the seeds of their own destruction.

Theory can leave questions unanswered, but practice has to come up with something.

Theory without data is myth: data without theory is madness.

Theories are not so much wrong as incomplete

Theory-free science makes about as much sense as value-free politics.

Theory not only formulates what we know but also tells us what we want to know, that is, the questions to which an answer is needed.

Theoretical and experimental physicists are now studying nothing at all-the vacuum. But that nothingness contains all of being.

Theories are always very thin and insubstantial, experience only is tangible.

Theories are not rejected by cirsumstantial evidence: it takes a theory to beat a theory.

Theory must mediate between all previous truths and certain new experiences

Theory states that Allahs law is cruel and unfair, but Allah himself has said that his law is indeed fair.

Theory without practice is just as incomplete as practice without theory.

Theories are patterns without value. What counts is action.

Theories crumble, but good observations never fade.

The origins of graph theory are humble, even frivolous.

The piano is a universal instrument. If you start there, learn your theory and how to read, you can go on to any other instrument.

The philosophy of reasoning, to be complete, ought to comprise the theory of bad as well as of good reasoning.

The power of a theory is exactly proportional to the diversity of situations it can explain.

The primary rule of business success is loyalty to your employer. That's all right as a theory. What is the matter with loyalty to yourself?

The principal axiom in their theory was: Everything can be proved, and everything can be disproved; and in the process, one must profit as much from the folly of others, and from his own superiority, as he can.

There is no controversy within science over the core proposition of evolutionary theory.

The profit orientation is only one orientation of a person. The same people who are interested in profit-making are also selfless. I am not saying that capitalist theory is wrong. I am saying that it has not been interpreted and practiced fully.

There is a mask of theory over the whole face of nature.

There is no good theory of disease which does not at once suggest a cure.

There are messages about civilisations and we are trying to be true to history as much as possible. We wanted all this to gel with some good theory about why these civilisations went down, why they weakened and crumbled. Because they did, they vanished.

There are prophets, there are guides, and there are argumentative people with theories, and one must be careful to discriminate between them.

There is no clear-cut distinction between example and theory

There is no pure, disinterested, theory-free observation.

There is no theory of a God, of an author of Nature, of an origin of the Universe, which is not utterly repugnant to my faculties. . .

There is no single theory that is used in economics that considers the finite nature of resources. It's shocking.

The strength of a theory is not what it allows, but what it prohibits; if you can invent an equally persuasive explanation for any outcome, you have zero knowledge.

There is nothing more practical than a good theory.

There is the Watchmaker Theory that God wound up the universe and let it tick. That may be. or it may be that he takes a hand in things from time to time. But whatever it is, I am sure that there is something out there.

There's nothing worse than people talking about theories and humor.

The rose is a rose, And was always a rose. But the theory now goes That the apple's a rose.

The supreme misfortune is when theory outstrips performance

There is nothing so practical as a good theory.