Confused Quote by George Gaylord Simpson

Evolution is a theory in a special philosophical sense of science, but in terms of ordinary laymen's use of language, it's a fact, ..…

— Richard Dawkins

There is a tendency for people to say evolution is only a theory. That is inappropriate.

— Richard Dawkins

I never say that evolution is a fact. Evolution is a theory. It's much more important than a fact, because theories explain things.

— Eugenie Scott

In fact, nothing in science as a whole has been more firmly established by interwoven factual information, or more illuminating than the universal occurrence…

— E. O. Wilson

“The problem Creationists identify is with the word 'theory', not with the case for evolution”

— Lance Parkin

Evolution is a fact. It is the best explanation of what is known from observations. It's a theory as powerful as the theory of…

— Donald Johanson

“I have a little urge to all the rational thinkers in the world, both scientists and non-scientists. Because of the fact that many of…

— Abhijit Naskar

The theory of evolution, like the theory of gravity, is a scientific fact.

— Neil deGrasse Tyson

Evolution is an organizing principle and when we call it a theory, we mean it's a theory, we don't mean that it's a belief…

— Alan I. Leshner

Evolution is not a fact. Evolution doesn't even qualify as a theory or as a hypothesis. It is a metaphysical research program, and it…

— Karl Popper

People sometimes try to score debating points by saying, Evolution is only a theory. That is correct, but it's important to understand what that…

— Richard Dawkins

Evolution as such is no longer a theory for a modern author. It is as much a fact as that the earth revolves around…

— Ernst Mayr