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It is the theory that decides what can be observed
It is the theory that decides what can be observed
If the facts don't fit the theory, change the facts.
If the facts don't fit the theory, change the facts.
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.
In theory there is no difference between theory and practice. In practice there is.
In theory there is no difference between theory and practice. In practice there is.
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.
An ounce of action is worth a ton of theory.
An ounce of action is worth a ton of theory.
A young boy is a theory, an old man is a fact.
A young boy is a theory, an old man is a fact.
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.