Characteristics Quote by John Henry Holland

Creating a new theory is not like destroying an old barn and erecting a skyscraper in its place. It is rather like climbing a…

— Albert Einstein

In the first stage of insight-building, all that researchers can do is observe phenomena. Second, they classify the phenomena in a way that helps…

— Clayton Christensen

Often the features metaphysicians are interested in, like causation, time, and essence, involve features that seem so basic or are so generally embedded in…

— L.A. Paul

At any one time there is a natural tendency among physicists to believe that we already know the essential ingredients of a comprehensive theory…

— Val Logsdon Fitch

It is the theory that decides what we can observe.

— Albert Einstein

There is a mask of theory over the whole face of nature.

— William Whewell

Observation always involves theory.

— Edwin Powell Hubble

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

— Thomas Jefferson

Whichever theory we adopt to give a rational explanation of human existence, that theory must take into account and explain the mental nature we…

— Arthur Keith

Different areas present us with possibilities to test different theories.

— Torbjorn Tannsjo

Theory must mediate between all previous truths and certain new experiences

— William James

Theory may be deliberate, as in a chapter on chemistry, or it may be second nature, as in the immemorial doctrine of ordinary enduring…

— Willard Van Orman Quine