Alternatives Quote by Manfred Eigen

A theory is a good theory if it satisfies two requirements: it must accurately describe a large class of observations on the basis of…

— Stephen Hawking

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

— Jean-Martin Charcot

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

Theories can be based on any assumptions, however bizarre.

— Milton Friedman

A theory should not attempt to explain all the facts, because some of the facts are wrong

— Francis Crick

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

— Karl Popper

The current situation with regard to theory is odd and maybe defined by a paradox.

— Simon Critchley

Any theory is better than no theory.

— Fuller Albright

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

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

A theory accepted by 99 percent of scientists may be wrong.

— Tom Bethell

[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