A good example of one of many ways to refute an atheist...

Bahnsen (Christian): I heard you use "logical binds" and "logical self-contradiction" in your speech .
You did say that?

Stein (Atheist): I used that phrase, yes.

Bahnsen: Do you believe there are laws of logic then?

Stein: Absolutely.

Bahnsen: Are they universal?

Stein: They are agreed upon by human beings not realizing it is just out in nature.

Bahnsen: Are they simply conventions then?

Stein: They are conventions that are self-verifying.

Bahnsen: Are they sociological laws or laws of thought?

Stein: They are laws of thought which are interpreted by man.

Bahnsen: Are they material in nature?

Stein: How could a law be material?

Bahnsen: That's the question I'm going to ask you.

Stein: I would say no. Dr. Bahnsen, would you call God material or immaterial?

Bahnsen: Immaterial.

Stein: What is something that's immaterial?

Bahnsen: Something not extended in space.

Stein: Can you give me any other example, other than God, that's immaterial?

Bahnsen: The laws of logic....


Taken from The Great Debate: Does God Exist? Dr. Greg Bahnsen versus Dr. Gordon Stein at the University of California, Irvine, 1985