The human species, according to the best theory I can form of it, is composed of two distinct races, the men who borrow and the men who lend. (Quote by - Charles Lamb)

Today the theory of evolution is about as much open to doubt as the theory that the earth goes round the sun. (Quote by - Richard Dawkins)

I grow daily to honour facts more and more, and theory less and less. A fact, it seems to me, is a great thing; a sentence printed, if not by God, then at least by the Devil. (Quote by - Thomas Carlyle)

Radical constructivism, thus, is radical because it breaks with convention and develops a theory of knowledge in which knowledge does not reflect an 'objective' ontological reality. (Quote by - Paul Watzlawick)

I have just got a new theory of eternity. (Quote by - Albert Einstein)

He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast. (Quote by - Leonardo da Vinci)

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. (Quote by - Aldous Huxley)

A professor must have a theory as a dog must have fleas. (Quote by - H. L. Mencken)

Let your religion be less of a theory and more of a love affair. (Quote by - Gilbert K. Chesterton)

There is no complete theory of anything. (Quote by - Robert Anton Wilson)

The theory of evolution by cumulative natural selection is the only theory we know of that is in principle capable of explaining the existence of organized complexity. (Quote by - Richard Dawkins)

Given the devaluation of literature and of the study of foreign languages per se in the United States, as well as the preponderance of theory over text in graduate literature studies, creative writing programs keep literature courses populated. (Quote by - Marilyn Hacker)

I have this theory that people in Hollywood don't read. They read 'Vanity Fair' and then consider themselves terribly well read. I think I can basically write about anybody without getting caught. (Quote by - Jackie Collins)

If we do discover a complete theory, it should be in time understandable in broad principle by everyone. Then we shall all, philosophers, scientists, and just ordinary people be able to take part in the discussion of why we and the universe exist. (Quote by - Stephen Hawking)

Is a bankrupt speculative philosophy, not a scientific fact. Only a spiritually bankrupt society could ever believe it. Only atheists could accept this Satanic theory. (Quote by - Jimmy Swaggart)

Rational behavior requires theory. Reactive behavior requires only reflex action. (Quote by - W. Edwards Deming)

I have a theory that the best ads come from personal experience. Some of the good ones I have done have really come out of the real experience of my life, and somehow this has come over as true and valid and persuasive. (Quote by - David Ogilvy)

When a torrent sweeps a man against a boulder, you must expect him to scream, and you need not be surprised if the scream is sometimes a theory. (Quote by - Robert Louis Stevenson)

Theory helps us to bear our ignorance of facts. (Quote by - George Santayana)

The Freudian theory is one of the most important foundation stones for an edifice to be built by future generations, the dwelling of a freer and wiser humanity. (Quote by - Thomas Mann)

If the theory turns out to be right, that will be tremendously thick and tasty icing on the cake. (Quote by - Brian Greene)

Scientific views end in awe and mystery, lost at the edge in uncertainty, but they appear to be so deep and so impressive that the theory that it is all arranged as a stage for God to watch man's struggle for good and evil seems inadequate. (Quote by - Richard P. Feynman)

Men act like brutes in so far as the sequences of their perceptions arise through the principle of memory only, like those empirical physicians who have mere practice without theory. (Quote by - Gottfried Leibniz)

Science is organized common sense where many a beautiful theory was killed by an ugly fact. (Quote by - Thomas Huxley)

Every great batter works on the theory that the pitcher is more afraid of him than he is of the pitcher. (Quote by - Ty Cobb)