Belief Quote by Alan I. Leshner

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

— Richard Dawkins

Is evolution a theory, a system, or an hypothesis? It is much more: it is a general condition to which all theories, all hypotheses,…

— Pierre Teilhard de Chardin

I think it's a theory, the theory of evolution and I don't accept it as a theory.

— Ron Paul

Is evolution a theory, a system, or a hypothesis? It is much more it is a general postulate to which all theories, all hypotheses,…

— Pierre Teilhard de Chardin

If you ask most atheists if the theory of evolution has anything to do with a belief, however, they will tell you that it…

— Ray Comfort

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

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

The fact of evolution is the backbone of biology, and biology is thus in the peculiar position of being a science founded on an…

— L. Harrison Matthews

[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

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 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

Well, it [evolution] is a theory, it is a scientific theory only, and it has in recent years been challenged in the world of…

— Ronald Reagan