Theory Quotes

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A logical theory may be tested by its capacity for dealing with puzzles, and it is a wholesome plan, in thinking about logic, to stock the mind with as many puzzles as possible, since these serve much the same purpose as is served by experiments in physical science.

Bertrand Russell

But just in proportion as this process of extermination has acted on an enormous scale, so must the number of intermediate varieties, which have formerly existed on the earth, be truly enormous. Why then is not every geological formation and every stratum full of such intermediate links? Geology assuredly does not reveal any such finely graduated organic chain; and this, perhaps, is the most obvious and gravest objection which can be urged against my theory. The explanation lies, as I believe, in the extreme imperfection of the geological record.

I have a theory, too, that the best and only answer to a smear or to an honest misunderstanding of the facts is to tell the truth

How is Marxist-Leninist theory to be linked with the practice of the Chinese revolution? To use a common expression, it is by "shooting the arrow at the target". As the arrow is to the target, so is Marxism-Leninism to the Chinese revolution. Some comrades, however, are "shooting without a target", shooting at random, and such people are liable to harm the revolution.

He who rejects this view of the imperfection of the geological record, will rightly reject the whole theory. For he may ask in vain where are the numberless transitional links which must formerly have connected the closely allied or representative species found in the successive stages of the same great formation?

By abstaining from all definite content, whether as formal logic and theory of science or as the legend of Being beyond all beings, philosophy declared its bankruptcy regarding concrete social goals.

Theodor W. Adorno

I've a theory that one can always get anything one wants if one will pay the price. And do you know what the price is, nine times out of ten? Compromise. A beastly thing, compromise, but it steals upon you as you near middle age. It's stealing upon me now. To get the woman I want I'd — I'd even take up regular work.

Agatha Christie

The weakness of the man who, when his theory works out into a flagrant contradiction of the facts, concludes "so much the worse for the facts: let them be altered," instead of "so much the worse for my theory."

George Bernard Shaw

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.

Ignorance is like a delicate exotic fruit; touch it and the bloom is gone. The whole theory of modern education is radically unsound. Fortunately, in England, at any rate, education produces no effect whatsoever.

No one must think that Newton's great creation can be overthrown in any real sense by this [Theory of Relativity] or by any other theory. His clear and wide ideas will for ever retain their significance as the foundation on which our modern conceptions of physics have been built.

Albert Einstein

The theory of relativity does, however, force us to change fundamentally our ideas of space and time. We must accept that time is not completely separate from and independent of space, but is combined with it to form an object called space-time.

Stephen Hawking

We never thought, sitting in my office on those afternoons, discussing Voltaire and Ingersoll, that we would ever be brought to this, did we? You, the atheist whom the mere sight of a church spire on the sky could enrage; and I who have never been able to divorce myself from reason enough even to accept your pleasant and labor-saving theory of nihilism.

William Faulkner

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

Without theory, practice is but routine born of habit. Theory alone can bring forth and develop the spirit of invention.

[Quantum theory] If this is correct, it signifies the end of physics as a science.

Albert Einstein

In war, theory is all right so far as general principles are concerned; but in reducing general principles to practice there will always be danger. Theory and practice are the axis about which the sphere of accomplishment revolves.

Napoleon I of France

The subject of this book is the structure of space-time on length-scales from 10-13cm, the radius of an elementary particle, up to 1028cm, the radius of the universe.... we base our treatment on Einstein's General Theory of Relativity. This theory leads to two remarkable predictions about the universe: first, that the final fate of massive stars is to collapse behind an event horizon to form a 'black hole' which will contain a singularity; and secondly, that there is a singularity in our past which constitutes, in some sense, a beginning to the universe.

Stephen Hawking

My theory of writing I can sum up in one sentence. An author ought to write for the youth of his own generation, the critics of the next, and the schoolmasters of ever after.

F. Scott Fitzgerald

From the vulgar bourgeois standpoint the terms dictatorship and democracy are mutually exclusive. Failing to understand the theory of class struggle, and accustomed to seeing in the political arena the petty squabbling of the various bourgeois circles and coteries, the bourgeois conceives dictatorship to mean the annulment of all the liberties and guarantees of democracy, tyranny of every kind, and every sort of abuse of power in the personal interests of a dictator.

The characteristic of a true theory is its fruitfulness.

Coincidences, in general, are great stumbling blocks in the way of that class of thinkers who have been educated to know nothing of the theory of probabilities- that theory to which the most glorious objects of human research are indebted for the most glorious of illustration.

Edgar Allan Poe

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? The usual approach of science of constructing a mathematical model cannot answer the questions of why there should be a universe for the model to describe. Why does the universe go to all the bother of existing?

Stephen Hawking

Theories are invigorating and tonic. Give me an ounce of fact and I will produce you a ton of theory by tea this afternoon.

Dear friend, all theory is gray, And green the golden tree of life.

Johann Wolfgang von Goethe