If the facts don't fit the theory, change the facts.

If the facts don't fit the theory, change the facts.

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.

A young boy is a theory, an old man is a fact.

A young boy is a theory, an old man is a fact.

You cannot run a business, or anything else, on a theory.

You cannot run a business, or anything else, on a theory.

It is the theory that decides what can be observed

It is the theory that decides what can be observed

[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.

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.

Relativity applies to physics, not ethics

Relativity applies to physics, not ethics

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.