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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.
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.
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.
If the facts don't fit the theory, change the facts.
If the facts don't fit the theory, change the facts.
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.
Whenever a theory appears to you as the only possible one, take this as a sign that you have neither read more
Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve
How empty is theory in the presence of fact
How empty is theory in the presence of fact
