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You cannot run a business, or anything else, on a theory.
You cannot run a business, or anything else, on a theory.
Many things difficult to design prove easy to performance.
Many things difficult to design prove easy to performance.
Our theories of the eternal are as valuable as are those which a chick which has not broken its way read more
Our theories of the eternal are as valuable as are those which a chick which has not broken its way through its shell might form of the outside world.
A theory is no more like a fact than a photograph is like a person.
A theory is no more like a fact than a photograph is like a person.
Conjecture as to things useful, is good; but conjecture as to what it would be useless to know, is very read more
Conjecture as to things useful, is good; but conjecture as to what it would be useless to know, is very idle.
An ounce of action is worth a ton of theory.
An ounce of action is worth a ton of theory.
A theory has only the alternative of being right or wrong. A model has a third possibility - it may read more
A theory has only the alternative of being right or wrong. A model has a third possibility - it may be right but irrelevant.
I never once made a discovery ... I speak without exaggeration that I have constructed three thousand different theories in read more
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.