Even Quote by Brian Greene

“A good scientific law or theory is falsifiable just because it makes definite claims about the world. For the falsificationist, If follows fairly readily…

— Alan F. Chalmers

A good scientific theory is one which is falsifiable, which has not been falsified.

— Richard Dawkins

A theory which is not refutable by any conceivable event is non-scientific. Irrefutability is not a virtue of a theory (as people often think)…

— Karl Popper

There is no falsification before the emergence of a better theory.

— Imre Lakatos

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

Every genuine test of a theory is an attempt to falsify it, or to refute it.

— Karl Popper

All we can do is search for the falsity content in our best theory.

— Karl Popper

It is easy to obtain confirmations, or verifications, for nearly every theory-if we look for confirmations. Confirmations should count only if they are the…

— Karl Popper

It is certainly not the least charm of a theory that it is refutable.

— Friedrich Nietzsche

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

In science, if an idea is not falsifiable, it is not that it is wrong, it is that we cannot determine if it is…

— Michael Shermer

A valid scientific theory is predictive, verifiable, and replicable. To me, that's beautiful.

— Dean Ornish