Theory Quotes

500+ Sourced quotes

"Thus, my friends," said Barbicane, "all motion suddenly stopped produces heat. And this theory allows us to infer that the heat of the solar disc is fed by a hail of meteors falling incessantly on its surface. They have even calculated - " "Oh, dear !" murmured Michel, "the figures are coming."

Then I started to think in Lipp's about when I had first been able to write a story about losing everything. It was up in Cortina d'Ampezzo when I had come back to join Hadley there after the spring skiing which I had to interrupt to go on assignment to Rhineland and the Ruhr. It was a very simple story called "Out of Season" and I had omitted the real end of it which was that the old man hanged himself. This was omitted on my new theory that you could omit anything if you knew that you omitted and the omitted part would strengthen the story and make people feel something more than they understood.

Ernest Hemingway

What lead me more or less directly to the special theory of relativity was the conviction that the electromotive force acting on a body in motion in a magnetic field was nothing else but an electric field.

Albert Einstein

Now to the term 'relativity theory.' I admit that it is unfortunate, and has given occasion to philosophical misunderstandings.

Albert Einstein

The Western approach to reality is mostly through theory, and theory begins by denying reality — to talk about reality, to go around reality, to catch anything that attracts our sense-intellect and abstract it away from reality itself. Thus philosophy begins by saying that the outside world is not a basic fact, that its existence can be doubted and that every proposition in which the reality of the outside world is affirmed is not an evident proposition but one that needs to be divided, dissected and analyzed. It is to stand consciously aside and try to square a circle.

How one gropes and falters when one wants to dedicate himself to knowledge, how in the sciences one tends to take the back for the front and the bottom for the top, this is to be presented in the history of color theory, which by treating a specific realm, must present symbolically the destiny of many other human efforts.

Johann Wolfgang von Goethe

The theory of independence is as old as man himself, and it was not invented in this hall. But it was in this hall that the theory became a practice; that the word went out to all, in Thomas Jefferson's phrase, that "the God who gave us life, gave us liberty at the same time." And today this Nation—conceived in revolution, nurtured in liberty, maturing in independence—has no intention of abdicating its leadership in that worldwide movement for independence to any nation or society committed to systematic human oppression.

John F. Kennedy

And so the arbitrary union of three incommensurate, mutually disconnected concepts became the basis of a bewildering theory... [by which] one of the lowest renderings of art, art for mere pleasure — against which all of the master teachers warned — was idealized as the ultimate in art.

A theory is a good theory if it satisfies two requirements: it must accurately describe a large class of observations on the basis of a model that contains only a few arbitrary elements, and it must make definite predictions about the results of future observations.

Stephen Hawking

It is only in the quantum theory that Newton's differential method becomes inadequate, and indeed strict causality fails us. But the last word has not yet been said. May the spirit of Newton's method give us the power to restore unison between physical reality and the profoundest characteristic of Newton's teaching - strict causality.

Albert Einstein

I imagine you already know that I am much more socialistic in my economic theory than capitalistic.

Martin Luther King, Jr.

I call it the Madman Theory, Bob. I want the North Vietnamese to believe I've reached the point where I might do anything to stop the war. We'll just slip the word to them that, for God's sake, you know Nixon is obsessed about Communism. We can't restrain him when he's angry and he has his hand on the nuclear button and Ho Chi Minh himself will be in Paris in two days begging for peace.

In theory it is easy to convince an ignorant person; in actual life, men not only object to offer themselves to be convinced, but hate the man who has convinced them.

Quantum mechanics is certainly imposing. But an inner voice tells me that it is not yet the real thing. The theory says a lot, but does not really bring us any closer to the secret of the "old one." I, at any rate, am convinced that He does not throw dice.

Albert Einstein

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?

Science, like dress, has its fashions, and the changes in the one are almost as sudden and radical as in the other. Many a time has a theory become old and given place to a newer sensation, only to be later rehabilitated after its earlier service has been forgotten.

The moment a person forms a theory, his imagination sees in every object only the traits which favor that theory.

Thomas Jefferson

In theory there is a possibility of perfect happiness: To believe in the indestructible element within one, and not to strive towards it.

No theory of government was ever given a fairer test or a more prolonged experiment in a democratic country than democratic socialism received in Britain. Yet it was a miserable failure in every respect. Far from reversing the slow relative decline of Britain vis-à-vis its main industrial competitors, it accelerated it. We fell further behind them, until by 1979 we were widely dismissed as 'the sick man of Europe'... To cure the British disease with socialism was like trying to cure leukaemia with leeches.

Margaret Thatcher

Buddhism does not accept a theory of God, or a creator. According to Buddhism, one's own actions are the creator, ultimately. Some people say that, from a certain angle, Buddhism is not a religion but rather a science of mind.

Tenzin Gyatso, 14th Dalai Lama

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 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

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

Albert Einstein

The characteristic of a true theory is its fruitfulness.

The true theory of our Constitution is surely the wisest and best, that the states are independent as to everything within themselves and united as to everything respecting foreign nations. Let the general government be reduced to foreign concerns only.

Thomas Jefferson