Best Quote by Donald Johanson

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

— Neil deGrasse Tyson

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

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

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

Some claim evolution is just a theory. As if it were merely an opinion. The theory of evolution, like the theory of gravity, is…

— Neil deGrasse Tyson

Evolution is a theory, and it's a theory that you can test. We've tested evolution in many ways. You can't present good evidence that…

— Bill Nye

Evolution is far more than a belief or an educated guess about how people came to be as they are. It is, in fact,…

— Alan I. Leshner

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

Evolution is one of the most powerful and important ideas ever developed in the history of science. Every question it raises leads to new…

— Bill Nye

“THE evidence for evolution grows by the day, and has never been stronger. At the same time, paradoxically, ill-informed opposition is also stronger than…

— Richard Dawkins

Given that evolution is a fact, this lack of evolution needs to be explained.

— J. William Schopf

There aren't sufficient scientific facts to establish the theory of evolution, and it deals with the origins of man, which is more from a…

— Scott Pruitt