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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.
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.
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.
Science is organized common sense where many a beautiful theory was killed by an ugly fact.
Science is organized common sense where many a beautiful theory was killed by an ugly fact.
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.
It is the theory that decides what can be observed
It is the theory that decides what can be observed
Let us work without theorizing, 'Tis the only way to make life endurable.
Let us work without theorizing, 'Tis the only way to make life endurable.
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.
