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An ounce of action is worth a ton of theory.
An ounce of action is worth a ton of theory.
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never read more
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.
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
There can be no theory of any account unless it corroborate with the theory of the earth.
There can be no theory of any account unless it corroborate with the theory of the earth.
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.
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.
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.
It is the theory that decides what can be observed
It is the theory that decides what can be observed