Over 40,000 Famous Quotes Sorted By Topic and Author

In order to shake a hypothesis, it is sometimes not necessary to do anything more than push it as far as it will go.

You cannot run a business, or anything else, on a theory.

In theory there is no difference between theory and practice. In practice there is.

Life is so unlike theory.

A theory has only the alternative of being right or wrong. A model has a third possibility - it may be right but irrelevant.

Let us work without theorizing, 'Tis the only way to make life endurable.

A young boy is a theory, an old man is a fact.

Many things difficult to design prove easy to performance.

put too much confidence in experimental results until they have been confirmed by theory.

I never once made a discovery ... I speak without exaggeration that I have constructed three thousand different theories in connection with the electric light ... Yet in only two cases did my experiments prove the truth of my theory.

A theory is no more like a fact than a photograph is like a person.

In scientific work, those who refuse to go beyond fact rarely get as far as fact.

Conjecture as to things useful, is good; but conjecture as to what it would be useless to know, is very idle.

There can be no theory of any account unless it corroborate with the theory of the earth.

Science is organized common sense where many a beautiful theory was killed by an ugly fact.