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You have to know you can first. How comes later.
You have to know you can first. How comes later.
[Do not] put too much confidence in experimental results until they have been confirmed by theory.
[Do not] put too much confidence in experimental results until they have been confirmed by theory.
You cannot run a business, or anything else, on a theory.
You cannot run a business, or anything else, on a theory.
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.
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.
The theory seems to be that as long as a man is a failure he is one of God's children, read more
The theory seems to be that as long as a man is a failure he is one of God's children, but that as soon as he succeeds he is taken over by the Devil.
