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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.
In scientific work, those who refuse to go beyond fact rarely get as far as fact.
In scientific work, those who refuse to go beyond fact rarely get as far as fact.
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.
An ounce of action is worth a ton of theory.
An ounce of action is worth a ton of theory.
Relativity applies to physics, not ethics
Relativity applies to physics, not ethics
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.
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.
You cannot run a business, or anything else, on a theory.
You cannot run a business, or anything else, on a theory.
How empty is theory in the presence of fact
How empty is theory in the presence of fact