95 quotes about theories follow in order of popularity. Be sure to bookmark and share your favorites!

I am an enthusiast, but not a crank in the sense that I have some pet theories as to the proper construction of a flying machine. I wish to avail myself of all that is already known and then, if possible, add my mite to help on the future worker who will attain final success.

Wilbur Wright

There is a hardcore rump within the British Muslim community that didn't actually believe somehow that Sidique and his cohorts were responsible. Rampant conspiracy theories mushroomed out of control.

Shahid Malik

Theories should be as simple as possible, but not simpler.

Albert Einstein

They have come up with about 10 different theories about their clot, ... but none of their theories have any evidence. There's no evidence of a clot.

Jonathan Skidmore

I wish he had started a dialogue with scientists before going public with his theories, ... There is some evidence, under the current administration, that it is 'policy first, science second.'

James Andrews

How thoroughly it is ingrained in mathematical science that every real advance goes hand in hand with the invention of sharper tools and simpler methods which, at the same time, assist in understanding earlier theories and in casting aside some more complicated developments.

David Hilbert

The conspiracy theories have never had it better.

Tom Segev

The evidence is still developing and evolving. The theories for the prosecution are still evolving, so that's what I think is taking so long.

Michael Nichols

Very few theories in science explain everything.

Mark Norell

Other theories have assumed that the landscape today is the same as in the Bronze Age, and that Homer perhaps didn't know the landscape very well. But what if the mismatch was because the geography has in fact changed?

Robert Bittlestone

As a rule we disbelieve all the facts and theories for which we have no use.

William James

The overwhelming majority of theories are rejected because they contain bad explanations, not because they fail experimental tests.

David Deutsch

It is sad that Mr. Hamilton resorted to conspiracy theories rather than just accept the consequences of his doping.

Terry Madden

We talk about everything. We give our opinions and theories of everything.

Nick Pisca

The society which scorns excellence in plumbing as a humble activity and tolerates shoddiness in philosophy because it is an exalted activity will have neither good plumbing nor good philosophy...neither its pipes nor its theories will hold water.

John W. Gardner

What we need now are answers, not theories.

Tom Lindsay

I think that his early optical theories owed a debt to alchemy.

Bill Newman

This is ... a stunning admission that the current theories do not explain it, and it has not refuted the idea that things are the product of intelligent cause.

John West

Our research focuses on the oldest stars, and probes the earliest phases of the evolution of our home galaxy, the Milky Way. The unprecedented sample available with RAVE will allow me -- and now, with the release of this data, others -- to test ideas of our origins laid out by various cosmological theories.

Rosemary Wyse

The graduate course will be going through the theories of inequality, inequalities of all kinds - why some countries are slower to grow than others, why some regions within countries are left behind, why some groups, whether racial, ethnic or whatever (are left behind).

Glenn Loury

The F.E.C.'s claims and legal theories are a bizarre interpretation of the club's mission, the Constitution, the laws adopted by Congress and their own regulations.

Pat Toomey

I thought I was being extremely mealy-mouthed, but I was accused of advocating conspiracy theories.

Paul Gilroy

There are theories that can form binary stars and theories that can form single stars, but there none that explain why you form more singles than binaries.

Charles Lada

I think the point to be understood is that we're all different. I've never been a fan of theories of acting. I didn't go to drama school, so I was never put through a training that was limited by someone saying, 'This is the way you should act.'

Ian McKellen

The system becomes more coherent as it is further extended. The elements which we require for explaining a new class of facts are already contained in our system. . . . In false theories, the contrary is the case.

William Whewell

It is sad that, over the years, all of these fanciful and unusual theories about Mr. Holt's disappearance should receive public ventilation, overshadow his life and require an explanation.

Graeme Johnstone

Usually you take a penalty because you're a little bit tired or lazy and you're out of position. Ron has been really stressing that for a couple of seasons, really. So the new rules are just reinforcing the theories he taught us over the last couple of years. It's not a real drastic change for us because of the way we played before -- sticks in passing lanes and good body position.

Scott Thornton

It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

Sir Arthur Conan Doyle

There has been an increase in the number of malformed frogs. What's causing these malformed frogs is not really clear, though there are a number of theories.

Charles Carlson

Because they expand the information presented to students about biological and chemical evolution by including some of the scientific criticisms of these theories.

Discovery Institute

I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

Sir Arthur Conan Doyle

We do not have critical mass on any of the theories.

James Kallstrom

The [anti-Shakespeare] theories are always pinned on two points.

James Shapiro

There are theories that some in the Liberal Party have accepted that we will lose and they are busily positioning themselves for after the loss. They should be trying to prevent the loss or even diminish the loss.

Mark Brindal

We have found a strange footprint on the shores of the unknown. We have devised profound theories, one after another, to account for its origins. At last, we have succeeded in reconstructing the creature that made the footprint. And lo! It is our own.

Sir Arthur Eddington

Truth does not need argument, agreement, theories or beliefs. There is only one test for it and that is to ask yourself 'Is the statement true or false in my experience?

Barry Long

The law is the law, and you are here to enforce the law. There are two competing theories of reality here as to what happened ... This is an odd situation. It's not a murder situation.

Mike Ramsey

I know they have lots of theories and ideas, but I don't know that they're any closer to nailing things down.

Richard Cook

So, for all the conspiracy theories out there, ... ... that's not what this is about. It's a computer bug that people deal with everyday. It's just that ours was in front of millions of people.

Daryn Kagan

One of my theories is that there are three nights of the year that are extremely important to customers - New Year's, Valentine's Day and Mother's Day. We try to be cognizant of that.

Noel Cunningham

Trying to document that was a circus. I talked to former superintendents, teachers and students. I made a lot of calls. I have several theories in the book, and maybe one of them is true. The closest bell was the most difficult to document.

Dale Niewoehner

I think clearly it's going to satisfy people who have suspicion about some of it, but some will still have conspiracy theories and that's not going to stop.

Shibley Telhami

Other theories suggest noodles were first made in the Middle East and introduced to Italy by the Arabs. Italians are widely credited for popularizing the food in Europe and spreading it around the world.

Lu Houyuan

I don't know why it is. I have my own theories. Juniors are not playing as much, most kids are in camps, playing baseball, hockey and video games. Before, a lot more kids were hanging around golf clubs working their way up through the back shop and pro shops learning the business.

Andy Shaw

Right now, there are no other theories that fit the data.

Derek Fox

I've heard those theories, but we have no concrete evidence one way or another. Nothing has been dismissed.

Bob Friend

When I teach about the Holocaust, I use it to try and get people to understand that the values that led to Hitler's election and the theories behind the mass execution of Jews were also prominent and are prominent in American society.

Ralph Leck

Traditional therapy focuses on the individual, looking at our unconscious motivation, etc.. Then there are family-systems theories that focus on the family as a unit, a single organism. 'Codes of Love' integrates both. It's a firm review of the literature and a new blending of very important skills.

Mark Bryan

We are not focused on any one individual, nor have we ruled anyone out. This is still a wide-open investigation. We're looking at all possible theories and motives. We're not focused on any one area.

Jimmy Lee

With this new data, theories about the early universe have just taken their first exam, and they passed with flying colors.

David Spergel

It really is a nice theory. The only defect I think it has is probably common to all philosophical theories. It's wrong.

Saul Kripke

It was like having the public in the room with us. She advocated for us, and to the extent (the district) could convince her that they were right, she did the same for them. There are nice theories that bargaining is between the association and the district, but the reality is the district is a public entity, we are public employees, and there's no denying we're sensitive to that.

Rich Kronberg

Netscape, the object of protection in this case, had in market share what the government would call a monopoly until the Great Satan of Microsoft came along. Luckily for the consuming public those theories are just that - theories.

John Warden

Reading these two genomes side by side, it's amazing to see the evolutionary changes that are occurring. I couldn't imagine Darwin looking for stronger confirmation of his theories.

Robert Waterston

In painting, as in the other arts, there's not a single process, no matter how insignificant, which can be reasonably made into a formula. You come to nature with your theories, and she knocks them all flat.

Pierre auguste Renoir

Those are the kinds of things that we have theories about, but we really don't have data.

Candice Hansen

There's been theories all the way from, 'Has the tsunami ... hurricanes and the effect of environmental factors created mold levels that are unprecedented? Right now, we're trying to deal with the close-in factors of ensuring we don't have a formula problem or a contamination problem in our manufacturing facilities. And nothing indicates that we do.

Ron Zarrella

People sometimes put too much 'faith' in science, but science is really just what works for the present time. Theories are constantly refuted and challenged. Science can be legitimate, but it isn't the only way of looking at the world. In my mind, religion is as valid as science.

Richard Lopez

We can never use humans to directly test out the theories. We can only make inferences based on natural observation.

Ralph Catalano

The truly privileged theories are not the ones referring to any particular scale of size or complexity, nor the ones situated at any particular level of the predictive hierarchy, but the ones that contain the deepest explanations.

David Deutsch

If you're going to say 'other theories,' then you need to have an example of what 'other theories' is.

Sheila Harkins

There are many theories, some extreme, about what happened to the president, ... If we can put to rest some of the wilder conspiracy theories, I think it's healthy to do so.

Robert Grossman

As far as theories, there's a lot of them, and we've run a lot of them to ground and come up with nothing.

Ronald Zarrella

It's very good to put theories to the test--some work, and some don't. It's a big study, but expense is kind of relative given the public health costs of giving wrong advice.

David Freedman

The European Commission overreached itself in the G.E.-Honeywell case. It pushed theories like the 'conglomerate effects' theory too far, and fitted the facts of the case to suit the theory.

Alec Burnside

We have no theories yet.

George Peterson

A lot of what I do in the book is debunk these conspiracy theories.

Lee Harvey Oswald

There are just a few radicals who push these things. I think we need to get back to the basics and leave the speculation and theories alone.

Jack Jordan

It's fine if they read passages from the Constitution, the history of the country, biographies of George Washington and Thomas Jefferson--who the English, back in the era of the American revolution, accused of terrorism. But then these children who are willing to practice these same precepts and theories can be reprimanded for actually living the Constitution.

Nativo Lopez

Both of these theories have hurdles.

Alan Vinegrad

It's another piece of the puzzle falling into place, but I would not say it debunks other theories. This particular piece gives more information about what cell division is doing before you get to the disease state.

Maria Carrillo

I listen to other guitar players, yeah. It gives me new concepts and shows me where the instrument is going for the future and it is going some places. There are some musicians who are really putting out a good vibe with new theories. I try and keep up.

George Benson

The situation has started to take on aspects of a currency crisis, with politicians and ECB officials providing a non-stop stream of public comment, with theories, excuses, and bold predictions for what lies ahead for the currency.

Chris Foster

Daring to challenge the existing theories and dreaming boldly can only lead to further progress in the scientific field and enable the next generation to face the challenges of the 21st century.

Madhavan Nair

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

Hosea Ballou

It means we have some theories, maybe some groups of individuals we may be looking at attached to those theories. I can't tell you who those groups of people might be.

Robert Rudge

I'm not against conspiracy theories as a whole, but they have to be at least somewhat credible. I guess that now that the 'X Files' is off the air you need to have this stuff to fill the void.

Mike Cloherty

It is always incorrect to assume you can know what someone's moral convictions are based on their philosophical theories.

Stanley Fish

Before I got married I had six theories about bringing up children; now I have six children and no theories.

John Wilmot

We are very excited to finally have our own newspaper so I can test all my theories on why newspapers are seeing declining circulation.

Louise Taylor

We only have theories about the biggest waves, because it's hard to get observations to quantify the theory.

David Vallee

[Cloned monkeys also would also facilitate an important of test the old argument of whether nature or nurture plays a bigger role in development of offspring.] We could learn what the environmental effect is, separate from genetics, ... There are theories that maternal environment can result in an IQ drop of around 10 points.

Gerald Schatten

And the continuity of our science has not been affected by all these turbulent happenings, as the older theories have always been included as limiting cases in the new ones.

Max Born

There is no shadow of protection to be had by sheltering behind the slender stockades of visionary speculation, or by hiding behind the wagon-wheels of pacific theories.

Madame Chiang Kai shek

There are all kinds of theories.

Jeff Chambers

There are many theories as to what causes hangovers. I don't believe this eliminates them.

Steve Lux

No relevant data which support hypotheses, laws, models and theories could be found in the papers and books by proponents of intelligent design, only unsubstantiated assumptions. Therefore, it can justifiably be viewed as pseudoscience.

Mark Perakh

Given a choice between two theories, take the one which is funnier.

Blore's Razor

There are many examples of old, incorrect theories that stubbornly persisted, sustained only by the prestige of foolish but well-connected scientists. Many of these theories have been killed off only when some decisive experiment exposed their incorrectness.

Michio Kaku

I never say that evolution is a fact. Evolution is a theory. It's much more important than a fact, because theories explain things.

Eugenie Scott

Whatever their limitations, Freud and Marx developed complex and subtle theories of human nature grounded in their observation of individual and social behavior. The crackpot rationalism of free-market economics merely relies on an abstract model of how people 'must' behave.

Ellen Willis

I observe that there are two entirely different theories according to which individual men seek to get on in the world. One theory leads a man to pull down everybody around him in order to climb up on them to a higher place. The other leads a man to help everybody around him in order that he may go up with them.

Elihu Root

Theories that go counter to the facts of human nature are foredoomed.

Edith Hamilton

All coaches have theories on where their teams are supposed to be, and we were as good as I could have hoped against Auburn. I want them to stay aggressive and keep competing.

Eddie Reese

One of my theories is that men love with their eyes; women love with their ears.

Zsa Zsa Gabor