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. (Quote by - John W. Gardner)

I am more fond of achieving than striving. My theories must prove to be facts or be discarded as worthless. My efforts must soon be crowned with success, or discontinued. (Quote by - Carolyn Wells )

A young boy is a theory, an old man is a fact. (Quote by - Edgar Watson Howe)

A work of art that contains theories is like an object on which the price tag has been left. (Quote by - Alexander Pope)

We all agree that your theory is crazy, but is it crazy enough? (Quote by - Niels Henrik David Bohr)

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. (Quote by - Max Born)

Theories crumble, but good observations never fade. (Quote by - Harlow Shapley)

In my opinion, assassination theories will continue to revolve around these assassinations as they have around several other significant assassinations in American history. The assassination of President Lincoln comes to mind. (Quote by - Louis Stokes)

To despise theory is to have the excessively vain pretension to do without knowing what one does, and to speak without knowing what one says. (Quote by - Bernard de Bovier de Fontenelle)

We do not talk - we bludgeon one another with facts and theories gleaned from cursory readings of newspapers, magazines and digests. (Quote by - Henry Miller)

In approaching our subject it will be best, without attempting to shorten the path by referring to famous theories of the drama, to start directly from the facts, and to collect from them gradually an idea of Shakespearean Tragedy. (Quote by - Andrew Coyle Bradley)

I had some hesitations about philosophy because, if you worked out a philosophical theory, it was hard to know whether you were going to be able to prove it or whether other theories had just as good a claim on belief. (Quote by - Stephen Cole Kleene)

The theories of the major philosophers of the 18th century secular enlightenment were biblical and theological in spite of themselves. (Quote by - M. H. Abrams)

The theory that can absorb the greatest number of facts, and persist in doing so, generation after generation, through all changes of opinion and of detail, is the one that must rule all observation. (Quote by - John Weiss)

On a group of theories one can found a school; but on a group of values one can found a culture, a civilization, a new way of living together among men. (Quote by - Ignazio Silone)

It really is a nice theory. The only defect I think it has is probably common to all philosophical theories. It's wrong. (Quote by - Saul Kripke)

There is a class, moreover, by whom all these scientific theories, and more are held as ascertained facts, and as the basis of philosophical inferences which strike at the root of theistic beliefs. (Quote by - Asa Gray)

In other words, unlike some people with new theories, we will go out, we'll go into a school and we get products and the products are evaluated, whether it's by teachers or others. The scores are quantified and then we compare performances. (Quote by - Robert Sternberg)

Very dangerous things, theories. (Quote by - Dorothy L. Sayers)

Theories are patterns without value. What counts is action. (Quote by - Constantin Brancusi)

The overwhelming majority of theories are rejected because they contain bad explanations, not because they fail experimental tests. (Quote by - David Deutsch)

Theories of love are found in the works of scientists, philosophers, and theologians. (Quote by - Mortimer Adler)

There are two theories on hitting the knuckleball. Unfortunately, neither of them works. (Quote by - Charley Lau)

Many writers upon the science of political economy have declared that it is the duty of a nation first to encourage the creation of wealth; and second, to direct and control its distribution. All such theories are delusive. (Quote by - Leland Stanford )

Evolutionary cosmology formulates theories in which a universe is capable of giving rise to and generating future universes out of itself, within black holes or whatever. (Quote by - Robert Nozick)