Arbitrary Quote by Stephen Hawking

A theory is just a mathematical model to describe the observations.

— Karl Popper

A theory is the more impressive the greater the simplicity of its premises is, the more different kinds of things it relates, and the…

— Albert Einstein

Any theory is better than no theory.

— Fuller Albright

“Do not be afraid of the word 'theory'. Yes, it can sound dauntingly abstract at times, and in the hands of some writers can…

— Richard Howells

A theory is only as good as its assumptions. If the premises are false, the theory has no real scientific value. The only scientific…

— Maurice Allais

A theory is scientific only if it can be disproved. But the moment you try to cover absolutely everything the chances are that you…

— Hermann Bondi

[Theory is] an explanation that has been confirmed to such a degree, by observation and experiment, that knowledgeable experts accept it as fact. That's…

— David Quammen

If we have a correct theory but merely prate about it, pigeonhole it and do not put it into practice, then that theory, however…

— Mao Zedong

Theory is good; but it doesn't prevent things from existing.

— Jean-Martin Charcot

A theory has only the alternative of being right or wrong. A model has a third possibility: it may be right, but irrelevant.

— Manfred Eigen

A theory may be so rich in descriptive possibilities that it can be made to fit any data.

— Phillip Johnson-Laird

Theories, for me, are just about freeing your mind. It doesn't mean the theory is going to work like a scientific theory works. It's…

— Steve Martin